Subjects -> BIOLOGY (Total: 3268 journals)
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    - BIOLOGY (1548 journals)
    - BIOPHYSICS (53 journals)
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BIOPHYSICS (53 journals)

Showing 1 - 52 of 52 Journals sorted alphabetically
Acta Biochimica et Biophysica Sinica     Hybrid Journal   (Followers: 5)
Advanced NanoBiomed Research     Open Access  
Annual Review of Biophysics     Full-text available via subscription   (Followers: 24)
Archives of Biochemistry and Biophysics     Hybrid Journal   (Followers: 17)
BBA Advances     Open Access   (Followers: 4)
BBA Bioenergetics     Hybrid Journal   (Followers: 5)
BBA Biomembranes     Hybrid Journal   (Followers: 11)
Biochemical and Biophysical Research Communications     Hybrid Journal   (Followers: 17)
Biochemistry and Biophysics Reports     Open Access  
Biochimica et Biophysica Acta (BBA) - General Subjects     Hybrid Journal   (Followers: 12)
Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids     Hybrid Journal   (Followers: 6)
Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease     Hybrid Journal   (Followers: 12)
Biochimica et Biophysica Acta (BBA) - Molecular Cell Research     Hybrid Journal   (Followers: 10)
Biochimica et Biophysica Acta (BBA) - Proteins and Proteomics     Hybrid Journal   (Followers: 11)
Bioinspired, Biomimetic and Nanobiomaterials     Hybrid Journal   (Followers: 3)
Biophysical Chemistry     Hybrid Journal   (Followers: 8)
Biophysical Journal     Hybrid Journal   (Followers: 46)
Biophysical Reports     Open Access   (Followers: 5)
Biophysical Reviews and Letters     Hybrid Journal   (Followers: 5)
Biophysics     Hybrid Journal   (Followers: 8)
Biophysics Reports     Open Access  
BMC Biophysics     Open Access   (Followers: 4)
Cell Biochemistry and Biophysics     Hybrid Journal   (Followers: 6)
Current Topics in Biophysics     Open Access   (Followers: 2)
Doklady Biochemistry and Biophysics     Hybrid Journal   (Followers: 1)
European Biophysics Journal     Hybrid Journal   (Followers: 4)
Food Biophysics     Hybrid Journal   (Followers: 3)
Freshwater Biology     Hybrid Journal   (Followers: 31)
GSTF Journal of BioSciences     Open Access  
IEEE Life Sciences Letters     Hybrid Journal  
IEEE Nanotechnology Express     Hybrid Journal   (Followers: 18)
Indian Journal of Biochemistry and Biophysics (IJBB)     Open Access   (Followers: 3)
International Journal of Biochemistry and Biophysics     Open Access   (Followers: 1)
International Journal of Biophysics     Open Access  
Journal of Biopharmaceutical Statistics     Hybrid Journal   (Followers: 23)
Journal of Biophotonics     Hybrid Journal   (Followers: 1)
Journal of Biophysical Chemistry     Open Access   (Followers: 3)
Journal of Biophysics and Structural Biology     Open Access   (Followers: 2)
Journal of Medicine, Physiology and Biophysics     Open Access  
Journal of Physical Chemistry & Biophysics     Open Access  
Membranes and Membrane Technologies     Full-text available via subscription  
Nanomedicine Research Journal     Open Access  
Nanomedicine: Nanotechnology, Biology and Medicine     Hybrid Journal   (Followers: 5)
Natural Products and Bioprospecting     Open Access   (Followers: 2)
Nature Communications     Open Access   (Followers: 310)
PMC Biophysics     Open Access  
Progress in Biophysics and Molecular Biology     Hybrid Journal   (Followers: 1)
Progress in Physical Geography     Hybrid Journal   (Followers: 11)
Quarterly Reviews of Biophysics     Hybrid Journal   (Followers: 3)
Radiation and Environmental Biophysics     Hybrid Journal   (Followers: 3)
Research & Reviews : A Journal of Life Sciences     Open Access  
Statistics in Biopharmaceutical Research     Full-text available via subscription   (Followers: 15)
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International Journal of Biophysics
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2168-4979 - ISSN (Online) 2168-4987
Published by SAP Homepage  [105 journals]
  • Analytical Approach to Cancer Therapy by Inhibition of Blockade Regulation
           in the Context of Protein Vibration

    • Abstract: Publication year: 2020Source: International Journal of Biophysics , Volume 10, Number 1Brajagopal MajumderA brief account of discovery of cancer therapy by overcoming the negative immune regulation of cancerous antigens (proteins) with cloned antibodies (proteins) for which Nobel Prize was awarded in Physiology or Medicine in 2018 has been analytically discussed here. These antibodies are now regarded as checkpoint inhibitors. These discoveries have opened a new channel for better treatment of different types of cancer. In view of these successful endeavours, attempts have been made by the author to explain the functioning of both curative and immune role of certain antibodies (proteins) like MDX 010, Nivolum ab and pembrolizum ab against cancer causing antigens like CTLA 4, PD 1, PDL 1, PDL 2, etc., in the context of "Protein vibration". A short note on the role of protein vibration was also discussed.
       
  • Comparative Characterization of the Natural Sounds of the Bottlenose
           Dolphin Tursiops truncatus and Odorrana tormota Fundamental in the Startle
           of the Female Anopheles gambiae

    • Abstract: Publication year: 2019Source: International Journal of Biophysics , Volume 9, Number 1Mang’are P. A., Ndiritu F. G., Rotich S. K., Makatiani J. K., Rapando B. W.Malaria prevention, control and treatment has over the years relied on chemicals. However, the malaria vectors and pathogens have developed considerable resistance lowering the decline rate of malaria related mortality and morbidity. Studies on mosquito vectors involving sounds generated naturally and electronically have yielded altercative findings in regard to the repellence of the mated female Anopheles gambiae s.s. However, other findings on the startle response of the African female A. gambiae to animal sounds showed a 46% evasive response educed by 35-60 kHz recorded sound of Odorrana tormota. These findings showed practicability of using animal sound in the startle of mosquitoes. Therefore, there was need to research further on other natural sounds, in comparison with the sound of O. tormota with a view of determining superior acoustic propagation parameters for the startle of the mated A. gambiae. This study therefore comparatively analysed the acoustic propagation parameters of the natural sounds of the bottlenose dolphin Tursiops truncatus and O. tormota fundamental in the startle of the female A. gambiae. Spectral analysis of the sound of T. trancatus revealed predominance of frequency modulation (FM), signal breaks and chaos stretching to ultrasonic levels similar to the sound of O. tormota. The sounds of T. truncatus and O. tormota differed in modulation due to the absence of constant frequency modulation in the sound of T. truncatus. The acoustic propagation parameters of the sound of T. truncatus and O. tormota compared using T-test at a confidence interval of 95% differed significantly (p < 0.05) with a low Pearson’s correlation. The mean fundamental frequency (mean entire) of the sound of T. truncatus was 0.9095 kHz which was 4.9387 kHz less than the mean fundamental frequency (mean entire) of the sound of O. tormota. The greatest measurement in frequency recorded in the sound of T. truncatus was 52.70 kHz under the maximum frequency (maximum entire). The sound of T. truncatus recorded the least mean, minimum and maximum parameter values in bandwidth (maximum entire), bandwidth (mean), peak amplitude (end), peak amplitude (maximum), peak amplitude (maximum entire), peak amplitude (mean), peak amplitude (mean entire) and peak amplitude (start) compared to values for the sound of O. tormota. A narrow bandwidth was observed in the means of all bandwidth measurements of the sound of T. truncatus compared to the values of the sound of O. tormota. The maximum measurements of the bandwidth (start) of the sound of T. truncatus exceeded the respective measurements of the sound of O. tormota by 7.80 kHz.The acoustic power and energy for the sound of T. truncatus were less than the that of the sound of O. tormota, though both sounds were pulsate and declined with increase in frequency. The maximum and mean acoustic energy of the sound of T. truncatus was 1.93937 Pa2s and 0.14392 Pa2s respectively which were 2.86936 Pa2s and 0.42714 Pa2s less than the sound of O. tormota. The delta power (ΔP) of the sound of T. truncatus was 47.3 dB higher than the respective measurements in the sound of O. tormota. The aggregate entropy, average entropy, average power, maximum entropy, maximum frequency, maximum power, minimum entropy and peak power of the pulsate sound of T. truncatus were 2.40 Bits, 2.40 Bits, 24.00 dB, 2.40 Bits, 6.84 kHz, 18.3 dB, 2.40 Bits and 18.3 dB less than the corresponding measurements of the sound of O. tormota. The delta power (ΔP) of the sound of T. truncatus was 47.30 dB greater than the corresponding delta power recorded by the sound of O. tormota. The acoustic propagation parameters of the sound of T. truncatus were comparatively inferior to the corresponding parameters of the sound of O. tormota hence not feasible for mosquito startle.
       
  • Thermodynamic Evaluation of Electrical Responses to Odorant in Olfactory
           Sensory Neurons

    • Abstract: Publication year: 2019Source: International Journal of Biophysics , Volume 9, Number 1Samantha Hagerty, Melissa Singletary, Oleg Pustovyy, Ludmila Globa, Edward E. Morrison, Iryna Sorokulova, Vitaly VodyanoyThe thermodynamic properties of olfactory sensory receptors were characterized by the measurement of electrical responses to odorants in isolated olfactory epithelia. Using the electroolfactogram (EOG), electrical activity was recorded within a temperature range of 16°C–35°C with epithelia obtained from animals being kept at ambient environmental conditions. The amplitude, the area under the curve, and the voltage kinetics of the electroolfactogram recordings were measured at different temperatures. The apparent values of the activation energy and the change of enthalpy (ΔH), entropy (ΔS), and Gibbs free energy (ΔG) of the odorant-receptor interaction were estimated using both Arrhenius and Eyring equations. The results reveal a broad variation of enthalpy (ΔH) and entropy contribution (TΔS) for odorant interaction with different sets of olfactory receptors. The observed enthalpy change was always followed by a corresponding change in the entropy contribution (TΔS), maintaining constant free energy (ΔG): ΔG=ΔH-TΔS and obeying the enthalpy-entropy compensation. Notably, in all experiments, the changes in enthalpy or entropy do not correlate with the change of free energy. Due to the fact that the values of ΔH and TΔS represent a summation of all chemical interactions between odorant and olfactory sensory neuron, it is difficult to expect the binding properties of odorants to serve as a foundation of molecular recognition by olfactory receptors. For this reason, our thermodynamic results do not support the shape mechanism of olfaction.
       
  • The Analysis of Protein Molecular Point

    • Abstract: Publication year: 2018Source: International Journal of Biophysics , Volume 8, Number 1Ratan Kumar SarkarThe molecular points in protein possess a structural biology. The molecular point symmetry has been shown in light of valine-tryptophan structural relation. The impairment of fundamental molecular point in the structure causes cancer. The molecular point is a sensitive point of amino acid structure in space-time.
       
  • Synthesis, X-Ray Structure and Molecular Docking Analysis of Two Novel
           1,2,4,5-Tetrasubstituted Imidazole Derivatives

    • Abstract: Publication year: 2018Source: International Journal of Biophysics , Volume 8, Number 1Ratika Sharma, A. Jayashree, B. Narayana, B. K. Sarojini, C. Ravikumar, S. Murugavel, Sumati Anthal, Rajni KantImidazole derivatives I [1-(3,5-Difluoro-4-methylphenyl)-2-(4-fluorophenyl)-4,5-diphenyl-1H-imidazole and II 2-(4-fluorophenyl)-4,5-diphenyl-1-(4-trifluoro)-phenyl-1H-imidazole] have been synthesized by using multicomponent reaction(MCR). The compounds (I & II) are crystallized in the monoclinic space group I2/a and in triclinic space group P-1with unit cell parameters a = 22.1693(7), b= 8.1636(6), c=25.7250(19) Å, β = 112.526(9)° and a = 9.2427(6), b = 13.4381(9), c =19.7520(4) Å, α= 90.464(5)°, β = 99.530(5)°, γ=106.210(6)˚ respectively. The complexes have been characterized by single crystal X-ray crystallographic analysis which revealed the asymmetric unit of the compound II contains two crystallographically independent molecules with almost similar geometries. The crystal structures were solved by Direct Methods and refined by Full Matrix least squares procedure. The C-H …F [inter-molecular and intra-molecular] interactions plays an important role in stabilizing the crystal packing. Molecular docking studies were used to identify the inhibitory activity against fungal protein cyctochrome P450 14 α demethylase enzyme.
       
  • Activation of Heat Shock Protein Induced by Curcumin to Prevent Huntington
           Disease- an Analytical Approach in the Context of Protein Vibration

    • Abstract: Publication year: 2018Source: International Journal of Biophysics , Volume 8, Number 1Brajagopal MajumderDepending on aggregate size, amino acid sequence and degree of misfolding, protein aggregates are disaggregated by Heat Shock Proteins (HSPs). Natural products can induce SHPs. Curcumin- the chemical constituent of turmeric paste/powder is now being considered as the inducer of HSPs which are able to reduce aggregates of glutamine amino acids and can also modulate the signaling pathway of small fragments of glutamine molecules. The molecular mechanism of disaggregation of aggregated glutamines has been considered from the view point of protein vibration which is expected to be happened either due to inherent electrostatic potential of the cell or due to external stimuli. Here we have discussed the current knowledge on the role of HSP induced by curcumin particularly with respect to Huntington diseases (HD) in the context of Protein Vibration Approach.
       
  • Microgravity and Nanomaterials

    • Abstract: Publication year: 2017Source: International Journal of Biophysics , Volume 7, Number 4Melissa Palma-Jiménez, Yendry Corrales Ureña, Carlos Villalobos Bermúdez, José Roberto Vega BaudritSome experiments evidence that Microgravity (Micro-g) has influence in the morphology growth rate of materials and physiology of biological systems. Some Micro-g systems have been developed for experimentation under these conditions. The 2-D, 3-D clinostats and Random Positioning machines stimulate weightlessness. The aim of this review is to show the state of the art of the research related to Micro-g effect on inorganic and organic materials. Some noticeable examples related to changes in nanomaterial morphology; physiological effect, and cellular response in biological systems of plants cells as maize (Zea mays), rice (Oryza sativa) and bean (Phaseolus vulgaris); and osseous and muscular tissue will be shown. There has been identified the Micro-g as a new condition of significant structural and functional changes in the organization cellular.
       
  • Size-Resolved Concentration of Bacteria and Fungi in Indoor and Outdoor
           Environments

    • Abstract: Publication year: 2017Source: International Journal of Biophysics , Volume 7, Number 4Mona MoustafaConcentration and size distribution of bacteria and fungi were evaluated in the kitchen and restaurant as an indoor environment in Minia university staff members club (El-Minia/Egypt) in summer time during the morning and afternoon periods. Measurements are also performed in outdoor. Six –stage Andersen impactor was used for sampling the biological particles. Temperature and relative humidity were recorded during the sampling. In all conditions, the indoor bacterial concentration was higher than the fungal concentration. The highest mean concentration of bacteria (650 cfu/m3) was found in the restaurant while the highest mean concentration of fungi (322 cfu/m3) was found in the kitchen. The outdoor mean concentration of bacteria was 170 cfu/m3 while the mean concentration of outdoor fungi was 214 cfu/m3. Most of bacterial and fungal concentrations are high in the size range of respirable particles (< 0.5 µm) that can penetrate deep in the human lung. Bacterial particles have higher dispersion than fungal particles. It was found that the environmental factors, temperature and relative humidity impact on the particle concentrations.
       
  • The Structural Analysis of Mutation and Methylation

    • Abstract: Publication year: 2017Source: International Journal of Biophysics , Volume 7, Number 3Ratan Kumar SarkarMethylation and mutation are structurally interrelated. P53 protein mutations impair intra-genic or intra-protein molecular suppression causing structural perturbation while methylation is concerned to negative gravitation. The etiology of cancer implies to transformation of valine-histidine complex to tryptophan-threonine complex through structural mutations of p53 protein molecule undergoes cell cycle based on differentiated molecular point structural level and extrusion of suppressed gravitational values in the structure.
       
  • Role of Protein Vibration in Anti-Alzheimer’s Effect of Ashwagandha
           (Withania Symnifera) - An Analytical Approach

    • Abstract: Publication year: 2017Source: International Journal of Biophysics , Volume 7, Number 3Brajagopal MajumderAlzheimer normally occurs in old age people. This results in memory loss and cognitive decline. The patient at his crucial stage losses almost his physical fitness. The disease has got no complete cure till the death. It is due to aggregation of either a different tau isomers or different constituents of Aβ – amyloid protein. A good number of scholars are now – a – days conducting a study on therapeutic aspects of Ashwagandha – a traditional Indian herb. Empirical studies also reflect on a successful implication of Ashwagandha root extract on Alzheimer’s affected mice. But the mechanism of activity of the extract has rarely been explained. The present paper focuses on the mechanism of disaggregation of aggregated protein by HSP – 70 induced by the extract of Ashwagandha and also on the removal technique of the disaggregated fragments with the help of LRP receptor. The problem has been viewed in the context of Protein Vibration – a hypothetical approach of the physical characteristics of protein.
       
 
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