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Publisher: Springer-Verlag   (Total: 2345 journals)

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Showing 1 - 200 of 2345 Journals sorted alphabetically
3D Research     Hybrid Journal   (Followers: 19, SJR: 0.214, h-index: 10)
4OR: A Quarterly J. of Operations Research     Hybrid Journal   (Followers: 9, SJR: 1.073, h-index: 25)
AAPS J.     Hybrid Journal   (Followers: 20, SJR: 1.192, h-index: 74)
AAPS PharmSciTech     Hybrid Journal   (Followers: 6, SJR: 0.718, h-index: 54)
Abdominal Imaging     Hybrid Journal   (Followers: 14, SJR: 0.723, h-index: 60)
Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg     Hybrid Journal   (Followers: 2, SJR: 0.447, h-index: 12)
Academic Psychiatry     Full-text available via subscription   (Followers: 22, SJR: 0.492, h-index: 32)
Academic Questions     Hybrid Journal   (Followers: 7, SJR: 0.135, h-index: 6)
Accreditation and Quality Assurance: J. for Quality, Comparability and Reliability in Chemical Measurement     Hybrid Journal   (Followers: 26, SJR: 0.378, h-index: 30)
Acoustical Physics     Hybrid Journal   (Followers: 10, SJR: 0.355, h-index: 20)
Acoustics Australia     Hybrid Journal  
Acta Analytica     Hybrid Journal   (Followers: 7, SJR: 0.387, h-index: 6)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 1, SJR: 0.624, h-index: 34)
Acta Biotheoretica     Hybrid Journal   (Followers: 5, SJR: 0.419, h-index: 25)
Acta Diabetologica     Hybrid Journal   (Followers: 14, SJR: 1.318, h-index: 46)
Acta Endoscopica     Hybrid Journal   (Followers: 1, SJR: 0.113, h-index: 8)
acta ethologica     Hybrid Journal   (Followers: 4, SJR: 0.465, h-index: 23)
Acta Geochimica     Hybrid Journal   (Followers: 3)
Acta Geodaetica et Geophysica     Hybrid Journal   (Followers: 1, SJR: 0.294, h-index: 13)
Acta Geotechnica     Hybrid Journal   (Followers: 7, SJR: 1.818, h-index: 22)
Acta Informatica     Hybrid Journal   (Followers: 5, SJR: 0.524, h-index: 32)
Acta Mathematica     Hybrid Journal   (Followers: 11, SJR: 8.021, h-index: 47)
Acta Mathematica Hungarica     Hybrid Journal   (Followers: 2, SJR: 0.53, h-index: 29)
Acta Mathematica Sinica, English Series     Hybrid Journal   (Followers: 5, SJR: 0.406, h-index: 30)
Acta Mathematica Vietnamica     Hybrid Journal   (SJR: 0.451, h-index: 5)
Acta Mathematicae Applicatae Sinica, English Series     Hybrid Journal   (SJR: 0.22, h-index: 20)
Acta Mechanica     Hybrid Journal   (Followers: 19, SJR: 0.898, h-index: 52)
Acta Mechanica Sinica     Hybrid Journal   (Followers: 5, SJR: 0.426, h-index: 29)
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (Followers: 5, SJR: 0.525, h-index: 18)
Acta Meteorologica Sinica     Hybrid Journal   (Followers: 3, SJR: 0.524, h-index: 14)
Acta Neurochirurgica     Hybrid Journal   (Followers: 6, SJR: 0.833, h-index: 73)
Acta Neurologica Belgica     Hybrid Journal   (SJR: 0.348, h-index: 27)
Acta Neuropathologica     Hybrid Journal   (Followers: 3, SJR: 6.61, h-index: 117)
Acta Oceanologica Sinica     Hybrid Journal   (Followers: 3, SJR: 0.295, h-index: 17)
Acta Parasitologica     Hybrid Journal   (Followers: 9, SJR: 0.581, h-index: 28)
Acta Physiologiae Plantarum     Hybrid Journal   (Followers: 2, SJR: 0.551, h-index: 39)
Acta Politica     Hybrid Journal   (Followers: 13, SJR: 0.658, h-index: 20)
adhäsion KLEBEN & DICHTEN     Hybrid Journal   (Followers: 5, SJR: 0.103, h-index: 4)
ADHD Attention Deficit and Hyperactivity Disorders     Hybrid Journal   (Followers: 20, SJR: 0.871, h-index: 15)
Adhesion Adhesives & Sealants     Hybrid Journal   (Followers: 7)
Administration and Policy in Mental Health and Mental Health Services Research     Partially Free   (Followers: 14, SJR: 0.795, h-index: 40)
Adsorption     Hybrid Journal   (Followers: 4, SJR: 0.774, h-index: 52)
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 3, SJR: 0.319, h-index: 15)
Advances in Atmospheric Sciences     Hybrid Journal   (Followers: 34, SJR: 0.959, h-index: 44)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 15, SJR: 1.255, h-index: 44)
Advances in Contraception     Hybrid Journal   (Followers: 2)
Advances in Data Analysis and Classification     Hybrid Journal   (Followers: 53, SJR: 1.113, h-index: 14)
Advances in Gerontology     Partially Free   (Followers: 9, SJR: 0.141, h-index: 3)
Advances in Health Sciences Education     Hybrid Journal   (Followers: 23, SJR: 1.397, h-index: 42)
Advances in Manufacturing     Hybrid Journal   (Followers: 3, SJR: 0.2, h-index: 4)
Advances in Polymer Science     Hybrid Journal   (Followers: 40, SJR: 0.637, h-index: 89)
Advances in Therapy     Hybrid Journal   (Followers: 5, SJR: 0.79, h-index: 44)
Aegean Review of the Law of the Sea and Maritime Law     Hybrid Journal   (Followers: 7)
Aequationes Mathematicae     Hybrid Journal   (Followers: 2, SJR: 0.882, h-index: 23)
Aerobiologia     Hybrid Journal   (Followers: 1, SJR: 0.511, h-index: 36)
Aesthetic Plastic Surgery     Hybrid Journal   (Followers: 8, SJR: 0.821, h-index: 49)
African Archaeological Review     Hybrid Journal   (Followers: 14, SJR: 0.612, h-index: 24)
Afrika Matematika     Hybrid Journal   (Followers: 1, SJR: 0.248, h-index: 6)
AGE     Hybrid Journal   (Followers: 7, SJR: 1.358, h-index: 33)
Ageing Intl.     Hybrid Journal   (Followers: 7, SJR: 0.337, h-index: 10)
Aggiornamenti CIO     Hybrid Journal   (Followers: 1)
Aging Clinical and Experimental Research     Hybrid Journal   (Followers: 3, SJR: 0.529, h-index: 55)
Agricultural Research     Hybrid Journal   (Followers: 3)
Agriculture and Human Values     Hybrid Journal   (Followers: 12, SJR: 1.197, h-index: 49)
Agroforestry Systems     Hybrid Journal   (Followers: 19, SJR: 0.64, h-index: 56)
Agronomy for Sustainable Development     Hybrid Journal   (Followers: 10, SJR: 1.732, h-index: 59)
AI & Society     Hybrid Journal   (Followers: 6, SJR: 0.171, h-index: 19)
AIDS and Behavior     Hybrid Journal   (Followers: 13, SJR: 2.006, h-index: 71)
Air Quality, Atmosphere & Health     Hybrid Journal   (Followers: 3, SJR: 0.706, h-index: 19)
Akupunktur & Aurikulomedizin     Full-text available via subscription   (Followers: 1)
Algebra and Logic     Hybrid Journal   (Followers: 3, SJR: 0.566, h-index: 18)
Algebra Universalis     Hybrid Journal   (Followers: 2, SJR: 0.388, h-index: 22)
Algebras and Representation Theory     Hybrid Journal   (Followers: 1, SJR: 0.868, h-index: 20)
Algorithmica     Hybrid Journal   (Followers: 7, SJR: 0.898, h-index: 56)
Allergo J.     Full-text available via subscription   (Followers: 1, SJR: 0.183, h-index: 20)
Allergo J. Intl.     Hybrid Journal   (Followers: 2)
Alpine Botany     Hybrid Journal   (Followers: 4, SJR: 0.729, h-index: 20)
ALTEX : Alternatives to Animal Experimentation     Open Access   (Followers: 3, SJR: 1.392, h-index: 32)
AMBIO     Hybrid Journal   (Followers: 14, SJR: 1.094, h-index: 87)
American J. of Cardiovascular Drugs     Hybrid Journal   (Followers: 10, SJR: 0.864, h-index: 39)
American J. of Community Psychology     Hybrid Journal   (Followers: 24, SJR: 1.237, h-index: 83)
American J. of Criminal Justice     Hybrid Journal   (Followers: 7, SJR: 0.634, h-index: 13)
American J. of Cultural Sociology     Hybrid Journal   (Followers: 11, SJR: 0.283, h-index: 3)
American J. of Dance Therapy     Hybrid Journal   (Followers: 4, SJR: 0.175, h-index: 13)
American J. of Potato Research     Hybrid Journal   (Followers: 2, SJR: 0.558, h-index: 35)
American J. of Psychoanalysis     Hybrid Journal   (Followers: 21, SJR: 0.293, h-index: 13)
American Sociologist     Hybrid Journal   (Followers: 12, SJR: 0.18, h-index: 13)
Amino Acids     Hybrid Journal   (Followers: 7, SJR: 1.362, h-index: 83)
AMS Review     Partially Free   (Followers: 4)
Analog Integrated Circuits and Signal Processing     Hybrid Journal   (Followers: 5, SJR: 0.21, h-index: 37)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 4, SJR: 0.665, h-index: 7)
Analysis in Theory and Applications     Hybrid Journal  
Analysis of Verbal Behavior     Hybrid Journal   (Followers: 4)
Analytical and Bioanalytical Chemistry     Hybrid Journal   (Followers: 28, SJR: 1.096, h-index: 123)
Anatomical Science Intl.     Hybrid Journal   (Followers: 2, SJR: 0.301, h-index: 26)
Angewandte Schmerztherapie und Palliativmedizin     Hybrid Journal  
Angiogenesis     Hybrid Journal   (Followers: 3, SJR: 2.212, h-index: 69)
Animal Cognition     Hybrid Journal   (Followers: 16, SJR: 1.122, h-index: 55)
Annales françaises de médecine d'urgence     Hybrid Journal   (Followers: 1, SJR: 0.156, h-index: 4)
Annales Henri Poincaré     Hybrid Journal   (Followers: 3, SJR: 1.377, h-index: 32)
Annales mathématiques du Québec     Hybrid Journal   (Followers: 4)
Annali dell'Universita di Ferrara     Hybrid Journal   (SJR: 0.504, h-index: 14)
Annali di Matematica Pura ed Applicata     Hybrid Journal   (Followers: 1, SJR: 1.167, h-index: 26)
Annals of Behavioral Medicine     Hybrid Journal   (Followers: 12, SJR: 2.112, h-index: 98)
Annals of Biomedical Engineering     Hybrid Journal   (Followers: 18, SJR: 1.182, h-index: 94)
Annals of Combinatorics     Hybrid Journal   (Followers: 3, SJR: 0.849, h-index: 15)
Annals of Data Science     Hybrid Journal   (Followers: 8)
Annals of Dyslexia     Hybrid Journal   (Followers: 9, SJR: 0.857, h-index: 40)
Annals of Finance     Hybrid Journal   (Followers: 28, SJR: 0.686, h-index: 14)
Annals of Forest Science     Hybrid Journal   (Followers: 4, SJR: 0.929, h-index: 57)
Annals of Global Analysis and Geometry     Hybrid Journal   (Followers: 1, SJR: 1.136, h-index: 23)
Annals of Hematology     Hybrid Journal   (Followers: 14, SJR: 1.117, h-index: 62)
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 6, SJR: 0.593, h-index: 42)
Annals of Microbiology     Hybrid Journal   (Followers: 9, SJR: 0.402, h-index: 26)
Annals of Nuclear Medicine     Hybrid Journal   (Followers: 5, SJR: 0.68, h-index: 45)
Annals of Operations Research     Hybrid Journal   (Followers: 8, SJR: 1.186, h-index: 78)
Annals of Ophthalmology     Hybrid Journal   (Followers: 9)
Annals of Regional Science     Hybrid Journal   (Followers: 7, SJR: 0.405, h-index: 42)
Annals of Software Engineering     Hybrid Journal   (Followers: 12)
Annals of Solid and Structural Mechanics     Hybrid Journal   (Followers: 10, SJR: 0.553, h-index: 8)
Annals of Surgical Oncology     Hybrid Journal   (Followers: 11, SJR: 1.902, h-index: 127)
Annals of Telecommunications     Hybrid Journal   (Followers: 7, SJR: 0.315, h-index: 25)
Annals of the Institute of Statistical Mathematics     Hybrid Journal   (Followers: 1, SJR: 0.931, h-index: 31)
Antonie van Leeuwenhoek     Hybrid Journal   (Followers: 5, SJR: 0.992, h-index: 87)
Apidologie     Hybrid Journal   (Followers: 4, SJR: 1.14, h-index: 57)
APOPTOSIS     Hybrid Journal   (Followers: 8, SJR: 1.554, h-index: 87)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 2, SJR: 0.354, h-index: 27)
Applications of Mathematics     Hybrid Journal   (Followers: 1, SJR: 0.274, h-index: 20)
Applied Biochemistry and Biotechnology     Hybrid Journal   (Followers: 44, SJR: 0.575, h-index: 80)
Applied Biochemistry and Microbiology     Hybrid Journal   (Followers: 17, SJR: 0.267, h-index: 26)
Applied Categorical Structures     Hybrid Journal   (Followers: 2, SJR: 0.361, h-index: 21)
Applied Composite Materials     Hybrid Journal   (Followers: 47, SJR: 0.705, h-index: 35)
Applied Entomology and Zoology     Partially Free   (Followers: 2, SJR: 0.554, h-index: 34)
Applied Geomatics     Hybrid Journal   (Followers: 3, SJR: 0.323, h-index: 9)
Applied Geophysics     Hybrid Journal   (Followers: 7, SJR: 0.541, h-index: 13)
Applied Intelligence     Hybrid Journal   (Followers: 13, SJR: 0.777, h-index: 43)
Applied Magnetic Resonance     Hybrid Journal   (Followers: 3, SJR: 0.358, h-index: 34)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 4, SJR: 0.955, h-index: 33)
Applied Mathematics - A J. of Chinese Universities     Hybrid Journal   (SJR: 0.275, h-index: 8)
Applied Mathematics and Mechanics     Hybrid Journal   (Followers: 4, SJR: 0.37, h-index: 26)
Applied Microbiology and Biotechnology     Hybrid Journal   (Followers: 61, SJR: 1.262, h-index: 161)
Applied Physics A     Hybrid Journal   (Followers: 7, SJR: 0.535, h-index: 121)
Applied Physics B: Lasers and Optics     Hybrid Journal   (Followers: 23, SJR: 0.983, h-index: 104)
Applied Psychophysiology and Biofeedback     Hybrid Journal   (Followers: 7, SJR: 0.677, h-index: 47)
Applied Research in Quality of Life     Hybrid Journal   (Followers: 10, SJR: 0.288, h-index: 15)
Applied Solar Energy     Hybrid Journal   (Followers: 16, SJR: 0.251, h-index: 6)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 4, SJR: 0.351, h-index: 9)
Aquaculture Intl.     Hybrid Journal   (Followers: 22, SJR: 0.613, h-index: 40)
Aquarium Sciences and Conservation     Hybrid Journal   (Followers: 1)
Aquatic Ecology     Hybrid Journal   (Followers: 30, SJR: 0.646, h-index: 44)
Aquatic Geochemistry     Hybrid Journal   (Followers: 3, SJR: 0.764, h-index: 39)
Aquatic Sciences     Hybrid Journal   (Followers: 12, SJR: 1.172, h-index: 53)
Arabian J. for Science and Engineering     Hybrid Journal   (Followers: 5, SJR: 0.345, h-index: 20)
Arabian J. of Geosciences     Hybrid Journal   (Followers: 1, SJR: 0.417, h-index: 16)
Archaeological and Anthropological Sciences     Hybrid Journal   (Followers: 21, SJR: 1.056, h-index: 15)
Archaeologies     Hybrid Journal   (Followers: 12, SJR: 0.397, h-index: 13)
Archiv der Mathematik     Hybrid Journal   (Followers: 1, SJR: 0.597, h-index: 29)
Archival Science     Hybrid Journal   (Followers: 52, SJR: 0.804, h-index: 22)
Archive for History of Exact Sciences     Hybrid Journal   (Followers: 7, SJR: 0.28, h-index: 15)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 1, SJR: 0.946, h-index: 23)
Archive for Rational Mechanics and Analysis     Hybrid Journal   (SJR: 4.091, h-index: 66)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 4, SJR: 0.865, h-index: 40)
Archives and Museum Informatics     Hybrid Journal   (Followers: 125)
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 4, SJR: 2.841, h-index: 40)
Archives of Dermatological Research     Hybrid Journal   (Followers: 6, SJR: 0.9, h-index: 65)
Archives of Environmental Contamination and Toxicology     Hybrid Journal   (Followers: 10, SJR: 0.846, h-index: 84)
Archives of Gynecology and Obstetrics     Hybrid Journal   (Followers: 17, SJR: 0.695, h-index: 47)
Archives of Microbiology     Hybrid Journal   (Followers: 8, SJR: 0.702, h-index: 85)
Archives of Orthopaedic and Trauma Surgery     Hybrid Journal   (Followers: 8, SJR: 1.039, h-index: 56)
Archives of Osteoporosis     Hybrid Journal   (Followers: 2, SJR: 1.092, h-index: 13)
Archives of Sexual Behavior     Hybrid Journal   (Followers: 9, SJR: 1.198, h-index: 74)
Archives of Toxicology     Hybrid Journal   (Followers: 16, SJR: 1.595, h-index: 76)
Archives of Virology     Hybrid Journal   (Followers: 5, SJR: 1.086, h-index: 90)
Archives of Women's Mental Health     Hybrid Journal   (Followers: 13, SJR: 1.264, h-index: 50)
Archivio di Ortopedia e Reumatologia     Hybrid Journal  
Archivum Immunologiae et Therapiae Experimentalis     Hybrid Journal   (Followers: 2, SJR: 1.2, h-index: 42)
ArgoSpine News & J.     Hybrid Journal   (SJR: 0.102, h-index: 3)
Argumentation     Hybrid Journal   (Followers: 5, SJR: 0.295, h-index: 18)
Arid Ecosystems     Hybrid Journal   (Followers: 3)
Arkiv för Matematik     Hybrid Journal   (Followers: 1, SJR: 0.948, h-index: 22)
Arnold Mathematical J.     Hybrid Journal   (Followers: 1)
Arthropod-Plant Interactions     Hybrid Journal   (Followers: 1, SJR: 0.797, h-index: 17)
Arthroskopie     Hybrid Journal   (Followers: 1, SJR: 0.145, h-index: 8)
Artificial Intelligence and Law     Hybrid Journal   (Followers: 9, SJR: 0.288, h-index: 25)
Artificial Intelligence Review     Hybrid Journal   (Followers: 14, SJR: 0.948, h-index: 48)
Artificial Life and Robotics     Hybrid Journal   (Followers: 7, SJR: 0.231, h-index: 14)
Asia Europe J.     Hybrid Journal   (Followers: 4, SJR: 0.247, h-index: 9)
Asia Pacific Education Review     Hybrid Journal   (Followers: 9, SJR: 0.371, h-index: 17)
Asia Pacific J. of Management     Hybrid Journal   (Followers: 12, SJR: 1.676, h-index: 50)
Asia-Pacific Education Researcher     Hybrid Journal   (Followers: 11, SJR: 0.353, h-index: 13)
Asia-Pacific Financial Markets     Hybrid Journal   (Followers: 2, SJR: 0.19, h-index: 15)
Asia-Pacific J. of Atmospheric Sciences     Hybrid Journal   (Followers: 20, SJR: 1.006, h-index: 14)
Asian Business & Management     Hybrid Journal   (Followers: 7, SJR: 0.41, h-index: 10)
Asian J. of Business Ethics     Hybrid Journal   (Followers: 7)
Asian J. of Criminology     Hybrid Journal   (Followers: 5, SJR: 0.263, h-index: 8)
AStA Advances in Statistical Analysis     Hybrid Journal   (Followers: 2, SJR: 0.681, h-index: 15)
AStA Wirtschafts- und Sozialstatistisches Archiv     Hybrid Journal   (Followers: 5, SJR: 0.195, h-index: 5)
ästhetische dermatologie & kosmetologie     Full-text available via subscription  
Astronomy and Astrophysics Review     Hybrid Journal   (Followers: 21, SJR: 4.511, h-index: 44)
Astronomy Letters     Hybrid Journal   (Followers: 20, SJR: 0.58, h-index: 30)

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Journal Cover Applied Biochemistry and Microbiology
  [SJR: 0.267]   [H-I: 26]   [17 followers]  Follow
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1608-3024 - ISSN (Online) 0003-6838
   Published by Springer-Verlag Homepage  [2345 journals]
  • Signal and regulatory effects of methylglyoxal in eukaryotic cells
    • Authors: O. V. Kosmachevskaya; K. B. Shumaev; A. F. Topunov
      Pages: 273 - 289
      Abstract: Methylglyoxal (MG) is one of the physiological glucose metabolites formed in living organisms. The data on the influence of MG on different internal systems of eukaryotic cells, including the central signaling pathways, are been discussed in the review. The central signaling pathways are stress-activated and sensitive to the action of reactive oxygen species. Integration of the literary data and authors’ results has allowed the conclusion that MG action on cells is multidirectional and is determined by its concentration and the physiological state of the cell. The cellular reaction upon increasing MG concentrations has a phase pattern and can be described by the hormesis concept. It has been hypothesized that MG participates in the formation of the braking regulatory circuit, which modulates the sensitivity of hypothalamus neurons to glucose. It is concluded that MG has a possible role in the functioning of the great biological clock. We propose that the data discussed in this review allow methylglyoxal to be considered a molecule with signal and regulatory functions.
      PubDate: 2017-05-01
      DOI: 10.1134/s0003683817030103
      Issue No: Vol. 53, No. 3 (2017)
  • New recombinant producer of human ω-amidase based on Escherichia coli
    • Authors: B. F. Krasnikov; Yu. I. Deryabina; E. P. Isakova; Iu. K. Biriukova; A. B. Shevelev; A. N. Antipov
      Pages: 290 - 295
      Abstract: A new artificial gene encoding human ω-amidase (Nit2) adapted for highly efficient expression in E. coli has been established. A pQE-Nit2 plasmid construct controlled by the T5 promoter has been engineered for its expression. The nit2 gene within the pQE-Nit2 construct has optimized codon usage and an artificial 6His-tag sequence inserted directly after the ATG initiation codon. This tag provides the possibility of single-step purification of a product via metal chelate chromatography. The codon-usage optimization involves the inclusion of several codons of extremely rare occurrence in natural E. coli ORFs within a 30 a.a-long N-terminal region. Other codons included in the N-terminus have moderate occurrence in E. coli. The subsequent sequence of the artificial gene has been composed of the most frequently occurring codons in E. coli. The recombinant producer based on the pQE-Nit2 construct allowed purification of the enzyme with an activity of 6.2 ± 0.2 μmol/min/mg protein, which corresponds to or slightly exceeds the specific activity of rat liver Nit2. The omega-amidase preparation is necessary for the screening of potential inhibitors that can be used as candidate drugs to cure hyperammonemia disorders in liver pathologies and oncological diseases.
      PubDate: 2017-05-01
      DOI: 10.1134/s0003683817030115
      Issue No: Vol. 53, No. 3 (2017)
  • Synonymous codon changes at the 5′-end of the gene strongly impact the
           heterologous protein expression in Escherichia coli
    • Authors: S. Bashir; M. Iqbal; S. Sadaf; M. W. Akhtar
      Pages: 296 - 303
      Abstract: This study describes the impact of 5′-end codon modulation on the expression of a heterologous gene, human granulocyte colony stimulating factor (GCSF), in Escherichia coli. Fourteen different constructs (pGCSF-01 to pGCSF-14) carrying single or multiple synonymous substitutions at +2, +3 and further down from +4 to +7 codons, were prepared and their expression was monitored in E. coli BL21 Codon-Plus (DE3) RIPL using a strong T7 lac-promoter based expression system. A single nucleotide change at +2 Thr codon (ACC→ACA) either alone or in combination with +3 Pro codon (CCC/CCT/CCA) resulted in the expression enhancement of an otherwise poorly expressed native-GCSF, to a level that corresponded to 45–50% of the total E. coli BL21 CodonPlus (DE3) RIPL cellular proteins. The differences in GCSF expression amongst different constructs could be attributed to the preferential or non-preferential codon usage, reduced number of G/C nucleotides and the stability of mRNA secondary structure formed near the 5′-end coding region. The expression of GCSF achieved was in the form of biologically inactive inclusion bodies that were solubilized using mild concentration of a non-ionic surfactant and refolded by a simplified, step-dialysis approach. Biological activity of the purified GCSF, assessed in induced neutropenic mice, was similar to the commercially available preparation of the GCSF analog (filgrastim).
      PubDate: 2017-05-01
      DOI: 10.1134/s0003683817030024
      Issue No: Vol. 53, No. 3 (2017)
  • Effect of extra- and intracellular sources of CO 2 on anaerobic
           utilization of glucose by Escherichia coli strains deficient in
           carboxylation-independent fermentation pathways
    • Authors: A. Yu. Skorokhodova; A. Yu. Gulevich; V. G. Debabov
      Pages: 304 - 309
      Abstract: The effect of extra- and intracellular CO2 sources on anaerobic glucose utilization by Escherichia coli strains deficient in the main pathways of mixed acid fermentation and possessing a modified system of glucose transport and phosphorylation was studied. Intracellular CO2 generation in the strains was ensured resulting from the oxidative decarboxylation of pyruvic acid by pyruvate dehydrogenase. Endogenous CO2 formation by pyruvate dehydrogenase stimulated anaerobic glucose consumption by the strains due to the involvement in the fermentation process of condensation reactions between oxaloacetic acid and acetyl-CoA. The availability of an external CO2 source (dissolved in medium sodium bicarbonate) promoted utilization of carbohydrate substrate by favoring the predominant participation in the fermentation of reactions directly dependent on phosphoenolpyruvate carboxylation. The positive effect of the availability of exogenous СО2 was sharply decreased in recombinant strains with the impaired functionality of the reductive branch of the tricarboxylic acid cycle. As a result, intracellular СО2 generation coupled to acetyl-CoA formation promoted anaerobic glucose utilization by cells of the corresponding mutants more markedly than the presence in the medium of dissolved sodium bicarbonate.
      PubDate: 2017-05-01
      DOI: 10.1134/s0003683817030140
      Issue No: Vol. 53, No. 3 (2017)
  • Identification of the di- n -butyl phthalate-biodegrading strains and the
           biodegradation pathway in strain LMB-1
    • Authors: Y. Fang; L.-S. Zhang; J. Wang; Y. Zhou; B.-C. Ye
      Pages: 310 - 317
      Abstract: DNA isolated from a greenhouse soil (Nanjing, Jiangsu Province, China) was suitable for PCR amplification of gene segment coding for the 16S rRNA. Diverse PCR products were characterized by cloning and sequencing, and analysis of bacterial colonies showed the presence over 26 phyla. The most bacteria belonged to Proteobacteria, Actinobacteria, Gemmatimonadetes, Acidobacteria and Planctomycetes. Furthermore, after the enrichment procedure of DBP-degrading microorganisms, 4 strains were isolated from the soil sample with di-n-butyl phthalate (DBP) biodegradability, and they were identified to be Rhizobium sp., Streptomyces sp., Pseudomonas sp. and Acinetobacter sp. Analysis of the degradation products by LC-MS led to identification of metabolites of DBP in strain LMB-1 (identified as Rhizobium sp.) which suggests that DBP was degraded through β-oxidation, demethylation, de-esterification and cleavage of aromatic ring.
      PubDate: 2017-05-01
      DOI: 10.1134/s000368381703005x
      Issue No: Vol. 53, No. 3 (2017)
  • Characterization flavanone 3β-hydroxylase expressed from Populus
           euphratica in Escherichia coli and its application in dihydroflavonol
    • Authors: J. Pei; P. Dong; T. Wu; L. Zhao; F. Cao; F. Tang
      Pages: 318 - 324
      Abstract: Flavanone 3β-hydroxylase plays very important role in the biosynthesis of flavonoids. A putative flavanone 3β-hydroxylase gene (Pef3h) from Populus euphratica was cloned and over-expressed in Escherichia coli. Induction performed with 0.1 mM IPTG at 20°C led to localization of PeF3H in the soluble fraction. Recombinant enzyme was purified by Ni-NTA affinity. The optimal activity of PeF3H was revealed at pH 7.6 and 35°C. The purified enzyme was stable over pH range of 7.6–8.8 and had a half-life of 1 h at 50°C. The activity of PeF3H was significantly enhanced in the presence of Fe2+ and Fe3+. The K M and V max for the enzyme using naringenin as substrate were 0.23 mM and 0.069 μmoles mg–1min-1, respectively. The K m and V max for eriodictyol were 0.18 mM and 0.013 μmoles mg–1min–1, respectively. The optimal conditions for naringenin bioconversion in dihydrokaempferol were obtained: OD600 of 3.5 for cell concentration, 0.1 mM IPTG, 5 mM α-ketoglutaric acid and 20°C. Under the optimal conditions, naringenin (0.2 g/L) was transformed into 0.18 g/L dihydrokaempferol within 24 h by the recombinant E. coli with a corresponding molar conversion of 88%. Thus, this study provides a promising flavanone 3β-hydroxylase that may be used in biosynthetic applications.
      PubDate: 2017-05-01
      DOI: 10.1134/s0003683817030127
      Issue No: Vol. 53, No. 3 (2017)
  • Preparation, properties and potential applications of exopolysaccharides
           from bacteria of the genera Xanthobacter and Ancylobater
    • Authors: N. V. Kichemazova; E. N. Bukharova; N. Yu. Selivanov; I. A. Bukharova; L. V. Karpunina
      Pages: 325 - 330
      Abstract: Two new bacterial biopolymers (exopolysaccharides), ancylan and xylophilan, have been isolated and characterized. The optimal parameters for ancylan and xylophilan production under laboratory conditions were selected. Their physicochemical properties and effects on microorganisms (bacteria, fungi, and ciliates) were studied. The results suggest the potential application of these new exopolysaccharides in medicine and veterinary science.
      PubDate: 2017-05-01
      DOI: 10.1134/s0003683817030073
      Issue No: Vol. 53, No. 3 (2017)
  • Cyanide detoxification by microbial consortia of natural-industrial
           complexes of gold heap leaching
    • Authors: M. P. Belykh; S. V. Petrov; A. Yu. Chikin; R. V. Adelshin; N. L. Belkova
      Pages: 331 - 337
      Abstract: Microorganisms that have adapted not only to high concentrations of pollutants but also to environmental conditions develop in autochthonous microbial communities of natural-industrial complexes of gold heap leaching. The biotechnological potential and diversity of autochthonous microbial communities involved in cyanide detoxification was evaluated by the example of a deposit situated in the Sakha (Yakutia) Republic. Under the zoning conditions of the ore heap, the biological component had a greater impact on cyanide destruction than chemical transformation. Metabolically active representatives of a microbial consortium are capable of surviving developed under these conditions. Phylotypes of the genus Serratia and family Alcaligenaceae that are capable of cyanide destruction and are potentially promising for the detoxification of wastes of gold heap leaching were revealed.
      PubDate: 2017-05-01
      DOI: 10.1134/s0003683817030036
      Issue No: Vol. 53, No. 3 (2017)
  • Intermicrobial relationships of the pea nodule symbiont Serratia sp. Ent16
           and its colonization of the host endorhizosphere
    • Authors: S. R. Garipova; D. V. Garifullina; An. H. Baimiev; R. M. Khairullin
      Pages: 338 - 345
      Abstract: A strain of Serratia sp. Ent16 isolated from internal tissues of pea nodule inhibited in vitro growth of the plant pathogens Fusarium oxysporum and Bipolaris sorokiniana and the model strain Rhizobium leguminosarum bv viceae 1078 but had a considerably weaker antagonistic effect on the Rhizobium strain Rh16 from its own nodule. Cells of the Ent16 strain tagged by the gfp gene (the Ent16-gfp strain) were not seen in the pea endorhizosphere when plants were grown in a rich culture medium. The development of symbiosis was favored by plant germination on filter paper. Confocal microscopy showed that individual cells of the Ent16-gfp strain were attached to the outer side of root hair cell walls, while agglomerations of fluorescent bacterial cells were detected in the zone of exoderm of lateral root formation and in root vessels. A series of scanned sections of pea root revealed the presence of the Ent16-gfp strain in lateral root primordia, through which the bacteria penetrated the endorhizosphere.
      PubDate: 2017-05-01
      DOI: 10.1134/s0003683817030061
      Issue No: Vol. 53, No. 3 (2017)
  • Strains of Bacillus ssp. regulate wheat resistance to Septoria nodorum
    • Authors: G. F. Burkhanova; S. V. Veselova; A. V. Sorokan’; D. K. Blagova; T. V. Nuzhnaya; I. V. Maksimov
      Pages: 346 - 352
      Abstract: The ability of Bacillus subtilis Cohn and Bacillus thuringiensis Berliner to induce systemic resistance in wheat plants to the casual agent of Septoria nodorum Berk., blotch has been studied. It has been shown that strains of Bacillus ssp. that possess the capacity for endophytic survival have antagonistic activity against this pathogen in vitro. A reduction of the degree of Septoria nodorum blotch development on wheat leaves under the influence of Bacillus spp. was accompanied by the suppression of catalase activity, an increase in peroxidase activity and H2O2 content, and expression of defence related genes such us PR-1, PR-6, and PR-9. It has been shown that B. subtilis 26 D induces expression levels of wheat pathogenesis-related (PR) genes which marks a SA-dependent pathway of sustainable development and that B. thuringiensis V-5689 and V-6066 induces a JA/ET-dependent pathway. These results suggest that these strain Bacillus spp. promotes the formation of wheat plant resistance to S. nodorum through systemic activation of the plant defense system. The designed bacterial consortium formed a complex biological response in wheat plants infected phytopathogen.
      PubDate: 2017-05-01
      DOI: 10.1134/s0003683817030048
      Issue No: Vol. 53, No. 3 (2017)
  • Protective effect of inhibitors of succinate dehydrogenase on wheat
           seedlings during osmotic stress
    • Authors: Yu. E. Kolupaev; Yu. V. Karpets; T. O. Yastreb; E. N. Firsova
      Pages: 353 - 358
      Abstract: The effect of malonate and sedaxane, a compound with the fungicidal effect which act as succinate dehydrogenase inhibitors, on the resistance of etiolated wheat seedlings (Triticum aestivum L.) to osmotic stress caused by 12% PEG 6000 solution, was studied. The presowing treatment of seeds with 0.3 mM sedaxane solution significantly reduced the inhibitory effect of osmotic stress on seedling growth. The protective effect of 10 mM malonate was significant when it was added to the incubation medium of the roots; the effect of preseeding treatment with malonate was less significant. Unlike malonate, malate had no positive effect on seedling growth under osmotic stress. The activity of succinate dehydrogenase and the hydrogen peroxide content decreased in seedlings after the treatment of roots with malonate and sedaxane. Pretreatment with sedaxane and the addition of malonate to the incubation medium of roots prevented the accumulation of a lipid peroxidation product, malondialdehyde, which is caused by osmotic stress, and increased peroxidase activity. It was concluded that the stress-protective effect of sedaxane and malonate on wheat seedlings might be due to the inhibition of succinate dehydrogenase-dependent formation of reactive oxygen species and the prevention of oxidative cell damage.
      PubDate: 2017-05-01
      DOI: 10.1134/s0003683817030097
      Issue No: Vol. 53, No. 3 (2017)
  • Flor yeast strains from culture collection: Genetic diversity and
           physiological and biochemical properties
    • Authors: S. A. Kishkovskaia; M. A. Eldarov; M. V. Dumina; T. N. Tanashchuk; N. V. Ravin; A. V. Mardanov
      Pages: 359 - 367
      Abstract: Sixteen flor yeast strains from the Magarach Collection of the Microorganisms for Winemaking (Yalta, Crimea), which are used for production of sherry, were analyzed for morphophysiological, cultural, and biochemical properties. Long-term storage did not affect their viability or the preservation of major properties, such as their flor- and aldehyde-forming abilities, and the ability to produce wines with typical sherry properties. Significant variation in the strains was observed mainly in the aldehyde-forming and flor-forming abilities and flor properties. Interdelta typing was shown to be the most informative technique to study the genetic diversity of flor yeast strains. Certain correlations between genetic polymorphisms and the enological properties of the strains were observed. The presence of a 24-bp long deletion in the ITS1 spacer of the ribosomal gene cluster, a typical feature of Spanish flor yeast strains, is correlated with a high level of production of aldehydes and acetales, efficient flor formation, and the ability to produce high quality sherry. The presence of a specific deletion in the promoter of the FLO11 gene appeared to be less informative, since the aldehyde and acetal production and flor formation abilities of such strains were variable. The studies of intraspecies genetic polymorphism by various molecular markers have revealed a high degree of phylogenetic closeness of some yeast flor strains from different geographic regions.
      PubDate: 2017-05-01
      DOI: 10.1134/s0003683817030085
      Issue No: Vol. 53, No. 3 (2017)
  • Penicillium verrucosum as promising candidate for bioremediation of
           environment contaminated with synthetic detergent at high concentration
    • Authors: V. D. Jakovljević; M. M. Vrvić
      Pages: 368 - 373
      Abstract: The aim of this study was to investigate the effect of synthetic detergent Merix (Henkel, Kruševac, Serbia), and its particular components—ethoxylated oleyl-cetyl alcohol and sodium tripolyphosphate on the growth and metabolic activity of Penicillium verrucosum. During 19 days of fungal cultivation in Czapek-Dox liquid medium supplemented with or without 0.5% pollutants, the following parameters were observed: pH, the total biomass dry weight, the quantity of free and total organic acids and proteolytic activity. The detergent caused a slight stimulatory (2.41%) effect whereas sodium tripolyphosphate and ethoxylated oleyl-cetyl alcohol provided a slight inhibitory action (0.59 and 2.75%, respectively) on the fungal biomass. The pollutants decreased pH values of the media and the quantity of free organic acids. In contrast, they enhanced the quantity of total organic acids. Proteolytic activity remained nearly unchanged (95.8%) in the presence of detergent and reduced to 80.1% in sodium tripolyphosphate-supplemented medium. In contrast, the enzyme activity sharply increased (260.8%) with ethoxylated oleyl-cetyl alcohol. The obtained results indicate the potential of P. verrucosum in bioremediation of environment contaminated with synthetic detergent taken in high concentration.
      PubDate: 2017-05-01
      DOI: 10.1134/s0003683817030164
      Issue No: Vol. 53, No. 3 (2017)
  • Aromatic and monoterpene alcohol accumulation by Eremothecium ashbyi
           strains differing in riboflavinogenesis
    • Authors: E. F. Semenova; A. I. Shpichka; E. V. Presnyakova
      Pages: 374 - 380
      Abstract: We examined the accumulation of phenylethanol, geraniol, citronellol, and nerol by Eremothecium ashbyi Guillermond 1935 strains characterized by different levels of riboflavin synthesis. There was a significant positive correlation between riboflavin and monoterpene alcohol biosyntheses (Spearman’s correlation coefficients = 0.81–1.00, p ≤ 0.05). Strain accumulation of the main secondary metabolites such as vitamin B2 and aroma forming compounds was found to be accompanied with an increase in the lipid droplet quantities and the vacuole filling with lipophilic compounds. These phenomena may be used as an indirect measure of riboflavinogenesis intensity and essential oil synthesis.
      PubDate: 2017-05-01
      DOI: 10.1134/s0003683817030139
      Issue No: Vol. 53, No. 3 (2017)
  • A novel Bod-mediator biosensor based on Ferrocene and Debaryomyces
           hansenii yeast cells
    • Authors: A. S. Zaitseva; V. A. Arlyapov; N. Yu. Yudina; N. M. Nosova; V. A. Alferov; A. N. Reshetilov
      Pages: 381 - 387
      Abstract: The mediators ferrocene, 1,1'-dimethylferrocene, ferrocene carboxaldehyde, ferrocene acetonitrile, neutral red, 2,6-dichlorophenolindophenol, thionine, methyl blue, and potassium ferricyanide were used in combination with Debaryomyces hansenii yeast cells to create a biosensor receptor for biochemical oxygen demand (BOD) assays. In this eukaryote, ferrocene and neutral red were observed to efficiently transfer electrons. The biosensor based on ferrocene was characterized by long-term stability (39 days) and a wide range of substrate specificity. The lower detected concentration boundary was 25.2 mg O2/dm3. A high correlation (R = 0.9971) was observed between the results obtained with water samples by this approach and the standard method. This is the first attempt to create a combination of yeast cells and a mediator. The biosensor can be employed for further research on the possibilities of its conventional use.
      PubDate: 2017-05-01
      DOI: 10.1134/s0003683817030152
      Issue No: Vol. 53, No. 3 (2017)
  • Flavonoid oxidation kinetics in aqueous and aqueous organic media in the
           presence of peroxidase, tyrosynase, and hemoglobin
    • Authors: M. E. Barsukova; A. I. Tokareva; T. S. Buslova; L. I. Malinina; I. A. Veselova; T. N. Shekhovtsova
      Pages: 149 - 156
      Abstract: The kinetics of oxidation reactions of flavonoids, quercetin, dihydroquercetin, and epicatechin has been studied in the presence of biocatalysts of different natures: horseradish peroxidase, mushroom tyrosinase, and hemoglobin from bull blood. Comparison of the kinetic parameters of the oxidation reaction showed that peroxidase appeared to be the most effective biocatalyst in these processes. The specificity of the enzyme for quercetin increased with increasing the polarity of the solvent in a series of ethanol–acetonitrile–dimethyl sulfoxide.
      PubDate: 2017-03-01
      DOI: 10.1134/s0003683817020053
      Issue No: Vol. 53, No. 2 (2017)
  • The new bacterial strain Paenibacillus sp. IB-1: A producer of
           exopolysaccharide and biologically active substances with phytohormonal
           and antifungal activities
    • Authors: M. D. Bakaeva; S. P. Chetverikov; T. Yu. Korshunova; O. N. Loginov
      Pages: 201 - 208
      Abstract: The bacterial strain IB-1, which exhibits antagonism towards phytopathogens and stimulates the growth of agricultural plants, was isolated from the soil. Analysis of the cultural, morphological, physiological, and biochemical features and nucleotide sequences of the genes 16S rRNA and gyrB, as well as the fatty acid composition, made it possible to attribute the strain IB-1 to the genus Paenibacillus; however, the results did not provide an unambiguous conclusion on its species. The strain Paenibacillus sp. IB-1 possesses nitrogenase activity, the ability to synthesize indoleacetic acid and cytokinin-like compounds, and antagonistic activity towards phytopathogenic fungi, which indicates prospects for its use as a biological product for agricultural purposes. A high-viscous exopolysaccharide was isolated from the cultural fluid of Paenibacillus sp. IB-1. Based on the data from IR and NMR spectroscopy, it was shown to be a heteropolymer comprised of one to four linked α-L-guluronic acid and β-D-mannuronic acid residues. The exopolysaccharide was successfully tested as an adhesive for presowing treatment of barley and wheat seeds with biofungicides.
      PubDate: 2017-03-01
      DOI: 10.1134/s0003683817020041
      Issue No: Vol. 53, No. 2 (2017)
  • Aerobic degradation of 2,4-dichlorophenoxyacetic acid and other
           chlorophenols by Pseudomonas strains indigenous to contaminated soil in
           South Africa: Growth kinetics and degradation pathway
    • Authors: A. O. Olaniran; L. Singh; A. Kumar; P. Mokoena; B. Pillay
      Pages: 209 - 216
      Abstract: Three indigenous pseudomonads, Pseudomonas putida DLL-E4, Pseudomonas reactans and Pseudomonas fluorescens, were isolated from chlorophenol-contaminated soil samples collected from a sawmill located in Durban (South Africa). The obtained isolates were tested for their ability to degrade chlorophenolic compounds: 2,4-dichlorophenoxyacetic acid (2,4-D), 2,4-dichlorophenol (2,4-DCP) and 2,4,6-trichlorophenol (2,4,6-TCP) in batch cultures. The isolates were found to effectively degrade up to 99.5, 98.4 and 94.0% with a degradation rate in the range of 0.67–0.99 (2,4-D), 0.57–0.93 (2,4-DCP) and 0.30–0.39 (2,4,6-TCP) mgL–1 day–1 for 2,4-D; 2,4-DCP and 2,4,6-TCP, respectively. The degradation kinetics model revealed that these organisms could tolerate up to 600 mg/L of 2,4-DCP. Catechol 2,3-dioxygenase activity detected in the crude cell lysates of P. putida DLL-E4 and P. reactans was 21.9- and 37.6-fold higher than catechol 1,2-dioxygenase activity assayed, suggesting a meta-pathway for chlorophenol degradation by these organisms. This is also supported by the generally high expression of C23O gene (involved in meta-pathway) relative to tfdC gene (involved in ortho-pathway) expression. Results of this study will be helpful in the exploitation of these organisms and/or their enzymes in bioremediation strategies for chlorophenol-polluted environment.
      PubDate: 2017-03-01
      DOI: 10.1134/s0003683817020120
      Issue No: Vol. 53, No. 2 (2017)
  • Autoclaved mycelium induces efficiently the production of hydrolytic
           enzymes for protoplast preparation of autologous fungus
    • Authors: M. Aloulou-Abdelkefi; H. Trigui-Lahiani; A. Gargouri
      Pages: 230 - 236
      Abstract: The production of hydrolytic enzymes by the mutant Trichoderma reesei Rut-C30 when cultivated in the presence of various carbon sources: glucose, wheat bran and autoclaved mycelium of Penicillium occitanis CT1 has been studied. Glucose was shown to repress all studied hydrolases, 3% of either wheat bran or autoclaved cell walls led to high titers of enzymes, and were favorably comparable to commercial lysing enzymes (LE). The lysing enzyme cocktail obtained when T. reesei Rut-C30 was cultivated in the presence of autoclaved P. occitanis CT1 mycelia appeared to be a most effective for P. occitanis CT1 protoplast formation. Maximal yield of protoplasts reached 13 × 106 protoplasts/mL while commercial LE preparation released only 4 × 106 protoplasts/mL. The protoplast yield was affected also by the osmotic stabilizer, with KCl giving the best results. Our results suggest that to achieve the best protoplastization rate, the enzyme preparation should be obtained following induction by the autoclaved mycelium of the autologous fungus.
      PubDate: 2017-03-01
      DOI: 10.1134/s000368381702003x
      Issue No: Vol. 53, No. 2 (2017)
  • Methane production by anaerobic digestion of organic waste from vegetable
           processing facilities
    • Authors: M. A. Gladchenko; D. A. Kovalev; A. A. Kovalev; Yu. V. Litti; A. N. Nozhevnikova
      Pages: 242 - 249
      Abstract: The article concerns converting waste from vegetable processing facilities into methane in anaerobic reactors with a small amount of inoculum (8.4%). Anaerobic digestion of vegetable waste with a high content of organic acids and carbohydrates makes it possible to achieve a methanogenesis productivity of 273–436 L CH4/kg of volatile solidis, which is comparable to or higher than the productivity of such reactors in the world (according to the literature). The contents of ammonia nitrogen and soluble phosphorus in the form of on undiluted substrate basis in the digested vegetable wastes ranged from 3.39 to 5.06 and from 0.78 to 1.03 g/L respectively. Thus, mineralized vegetable waste can be used as an organic fertilizer with a high nutrient content. The results show the feasibility of the technology of conversion of organic waste from vegetable processing facilities into methane and organic fertilizer in anaerobic fermenters (digesters).
      PubDate: 2017-03-01
      DOI: 10.1134/s0003683817020090
      Issue No: Vol. 53, No. 2 (2017)
School of Mathematical and Computer Sciences
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