Results 81 to 90 of about 409 (134)
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The reaction of polylysine with 2,4-dinitrofluorobenzene
International Journal of Biochemistry, 1978Abstract 1. 1. Kinetics of the reaction of 2,4-dinitrofluorobenzene with poly-1-lysine has been investigated over the pH range 8.5–10.85. 2. 2. The reactivity of the polylysine was resolved into four parts; two associated with helical regions and two associated with coil regions. 3. 3.
R C, Parker, R, Rakowitz, D S, Kristol
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Polylysine effect on thylakoid membranes
Biophysical Chemistry, 2020Thylakoid membranes of photosynthetic plant chloroplasts are involved in a wide range of energy producing pathways. Their stacking can be employed in order to provide increased surface area for biocatalytic purposes. Here we probe the aggregate formation of higher plants' thylakoids using low-molecular poly-l-lysine as an electrostatic polymer linker ...
Virjinia, Doltchinkova +1 more
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Reversible Inhibition of Pepsin by Polylysine
Nature, 1954THE mode of action of low-molecular weight enzyme inhibitors has been intensively studied. This does not, however, apply to high-molecular weight enzyme inhibitors. So far as we are aware, no work has been published on synthetic high-molecular weight enzyme inhibitors, and the mode of action of natural high-molecular weight enzyme inhibitors, such as ...
E, KATCHALSKI, A, BERGER, H, NEUMANN
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Preparation of Asialoorosomucoid-Polylysine Conjugates
Bioconjugate Chemistry, 1994Asialoorosomucoid-polylysine (ASOR-PL) conjugates have been recently developed as carriers of electrostatically bound DNA for targeted delivery to the hepatic asialoglycoprotein receptor (ASGPr) for gene therapy. Using acid-urea gel electrophoresis we have found that previously reported procedures for the fractionation of ASOR-PL conjugates do not ...
T D, McKee +3 more
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Effect of Synthetic Polylysine on Fungi
Science, 1960The synthetic, basic poly-α-amino acid, polylysine, had antifungal activity against plant pathogens (three strains of fusaria, three isolates of verticillia, and Ceratocystis fimbriata ) and against the human pathogens ( Trichophyton mentagrophytes, T.
D J, Buchanan-Davidson +3 more
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Biopolymers, 1974
AbstractThermal denaturation and renaturation of directly mixed and reconstituted polylysine–DNA, directly mixed polylysine–nucleohistone complexes, and NaCl‐treated nucleohistones in 2.5 × 10−4 M EDTA, pH 8.0 have been studied. At the same input ratio of polylysine to DNA, the percent of renaturation of free base pairs in a directly mixed polylysine ...
H J, Li +4 more
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AbstractThermal denaturation and renaturation of directly mixed and reconstituted polylysine–DNA, directly mixed polylysine–nucleohistone complexes, and NaCl‐treated nucleohistones in 2.5 × 10−4 M EDTA, pH 8.0 have been studied. At the same input ratio of polylysine to DNA, the percent of renaturation of free base pairs in a directly mixed polylysine ...
H J, Li +4 more
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Aminotransferase activity of thermal polylysine
Experientia, 1968Thermisch hergestelltes Polylysin beschleunigt die Ubertragung von Aminogruppen des Harnstoffs auf α-Ketoglutarsaure. Das pH-Optimum dieser Reaktion, die die Anwesenheit von Cu-Ionen erfordert, liegt bei 7.00. Die Transaminierungsreaktion folgt derMichaelis-Menten-Kinetik.
G, Krampitz +3 more
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Polylysine supports electrofusion
Bioelectrochemistry and Bioenergetics, 1996Abstract A series of poly- l -lysine fractions (mean molecular masses M m from 3970 to 132 300) at extremely low concentrations in the nanomolar range were combined with dielectrophoresis and rectangular pulsation of barley protoplasts in order to support electrofusion of membranes.
U. Gröbner, S. Velizarov, H. Berg
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Blocking Polylysines on Homemade Microarrays
Cold Spring Harbor Protocols, 2019Homemade microarrays are printed on polylysine-coated slides. The lysines form a positively charged surface that can bind nonspecifically to the acidic nucleic acids during hybridization, resulting in significant background fluorescence. Thus, a key step in microarray processing is blocking all of the surface lysines not associated with the ...
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Journal of Biomedical Materials Research Part A, 2015
AbstractEngineered culture substrates with chemical neurite guidance cues have been used for studying the mechanism of axon pathfinding at cellular level. In this study, we designed a novel poly‐l‐lysine (PLL) micropattern (“pinstripe micropattern”) to investigate how the same biomolecules with slightly different surface concentration can affect in ...
Joo, S Joo, Sunghoon +2 more
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AbstractEngineered culture substrates with chemical neurite guidance cues have been used for studying the mechanism of axon pathfinding at cellular level. In this study, we designed a novel poly‐l‐lysine (PLL) micropattern (“pinstripe micropattern”) to investigate how the same biomolecules with slightly different surface concentration can affect in ...
Joo, S Joo, Sunghoon +2 more
openaire +3 more sources