Results 51 to 60 of about 65,968 (266)
Defects in Polynucleotide phosphorylase impairs virulence in Escherichia coli O157:H7
Frontiers in Microbiology, 2015 Polynucleotide phosphorylase (PNPase) is reported to regulate virulence in Salmonella, Yersinia spp. and Campylobacter jejuni, yet its role in Escherichia coli O157:H7 has not been investigated. To gain insights into its roles in E.
Jia eHu, Jia eHu, Meijun eZhu
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Electronic analogue of DNA [PDF]
Компьютерные исследования и моделирование, 2017 It is known that the internal mobility of DNA molecules plays an important role in the functioning of these molecules. This explains the great interest of researchers in studying the internal dynamics of DNA.
L. V. Yakushevich
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ChemCatChem, EarlyView.Thioxanthone is an efficient visible‐light photosensitizer and facilitates reactions that are not known from natural enzymes. It is now possible to incorporate thioxanthone as a noncanonical amino acid (thioX) into proteins by an engineered amino acyl tRNA synthetase.
Marco Seifert +3 more
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Scaling and Visualization of Nucleotide Sequences [PDF]
EPJ Web of Conferences, 2019 Algorithms for scaling and visualization of nucleotide sequences developed in this study allow identifying relationships between the biochemical parameters of DNA and RNA molecules with scale invariance, fractal clusters, nonlinear ordering and symmetry ...
Stepanyan Ivan V., Khussein Abbakar M.
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ENZYMATIC SYNTHESIS OF POLYNUCLEOTIDES
Journal of Biological Chemistry, 1957 SUMMARY The relative activity toward different nucleoside diphosphates remains essentially unchanged after 500-fold purification of polynucleotide phosphorylase of Azotobacter v&elan&i suggesting that a single enzyme is involved. The purified enzyme, virtually free of nuclease, contains small amounts of an oligoribonucleotide (with adenine, guanine ...
Matthys Staehelin +2 more
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Mechanism of RNA 2′,3′-cyclic phosphate end healing by T4 polynucleotide kinase–phosphatase
Nucleic Acids Research, 2012 T4 polynucleotide kinase–phosphatase (Pnkp) exemplifies a family of enzymes with 5′-kinase and 3′-phosphatase activities that function in nucleic acid repair.
Ushati Das, S. Shuman
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A personal 360° view of applications of ‘biomimetic’ molecular recognition
Journal of Chemical Technology &Biotechnology, EarlyView.Abstract Molecular recognition between biological molecules has formed the basis for innumerable applications in biotechnology for the last seven decades or so. Techniques such as affinity chromatography, solid‐phase and aqueous two‐phase extraction, affinity precipitation, biomimetic catalytic systems, biosensors and molecular imprinting all exploit ...
Christopher R Lowe
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New Fractal Soliton Solutions and Sensitivity Visualization for Double-Chain DNA Model
Journal of Function Spaces, 2022 This article discusses dynamics of the fractal double-chain deoxyribonucleic acid model. This structure contains two long elastic homogeneous strands that serve as two polynucleotide chains of deoxyribonucleic acid molecules, bounded by an elastic ...
Zara Hassan +7 more
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Polynucleotide-Chitosan Complex, an Insoluble but Reactive Form of Polynucleotide.
Chemical and Pharmaceutical Bulletin, 1997 DNA formed an insoluble complex on mixing with chitosan (poly-D-glucosamine) in solution. The DNA content of the complex was about 50% and the DNA remained insoluble in aqueous media of pH 2-7%; e.g., on treatment of the DNA-chitosan complex with phosphate-buffered saline at pH 7 and 37 degrees C for 26 h, the DNA released into the aqueous phase was ...
Takashi Kubo +3 more
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mLife, EarlyView.Abstract Extractable glycolipids of mycobacteria, such as lipooligosaccharides (LOSs), play crucial roles in responding to environmental stress and modulating the host immune response. Although the biosynthesis of LOS is likely regulated at multiple levels to ensure proper composition of the cell wall, the key regulators remain unknown.
Chuan Wang +6 more
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