Results 251 to 260 of about 1,615,580 (309)
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The Journal of Immunology, 1969
Abstract Antisera to bovine pancreatic ribonuclease were fractionated on columns of DEAE Sephadex A-50 and the fractions were characterized by allotype content, electrophoretic mobility, the heterogeneity of heavy chains and the effect on enzyme activity.
H Pelichová, T Suzuki, B Cinader
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Abstract Antisera to bovine pancreatic ribonuclease were fractionated on columns of DEAE Sephadex A-50 and the fractions were characterized by allotype content, electrophoretic mobility, the heterogeneity of heavy chains and the effect on enzyme activity.
H Pelichová, T Suzuki, B Cinader
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Archives of Biochemistry and Biophysics, 1960
Abstract Hydroxamates of peptides were formed from some peptides by incubating with pH5 enzyme, hydroxylamine and ATP. l -Leucyl- l -tyrosyl-hydroxamate was identified by paper chromatography. The formation of glycyl- l -leucyl-hydroxamate was dependent on ATP.
S, TUBOI, A, HUZINO
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Abstract Hydroxamates of peptides were formed from some peptides by incubating with pH5 enzyme, hydroxylamine and ATP. l -Leucyl- l -tyrosyl-hydroxamate was identified by paper chromatography. The formation of glycyl- l -leucyl-hydroxamate was dependent on ATP.
S, TUBOI, A, HUZINO
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Corticosteroids and Enzyme Activity
1964Publisher Summary This chapter describes those enzymes that are altered following adrenalectomy or the administration of corticosteroids. The current literature on this subject is descriptive rather than interpretive. Although it bridges the interest of endocrinologists, pharmacologists, and biochemists, few answers are to be found at present to the ...
F, ROSEN, C A, NICHOL
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2003
Abstract This account will concentrate on the behaviour of enzymes, the determination of their activities, and their responses to alterations in substrate concentration. Particular emphasis will be placed on studies of the effects of inhibitors, since these may be used as therapeutic drugs as well as tools to help elucidate their ...
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Abstract This account will concentrate on the behaviour of enzymes, the determination of their activities, and their responses to alterations in substrate concentration. Particular emphasis will be placed on studies of the effects of inhibitors, since these may be used as therapeutic drugs as well as tools to help elucidate their ...
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Enzyme electrode-based kinetic assays of enzyme activities
Analytical Biochemistry, 1979Abstract Potentiometric enzyme electrodes for urea, AMP, and adenosine have been used for the kinetic assays of arginase (EC 3.5.3.1.), 3′:5′-cyclic-nucleotide phosphodiesterase (EC 3.1.4.17), and 5′-nucleotidase (EC 3.1.3.5), respectively. The initial rate of potential change, after addition of the enzyme to the substrate solution, is direetly ...
C R, Gebauer +2 more
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Lignin-Degrading Enzyme Activities
2012Over the past three decades, the activities of four kinds of enzyme have been purported to furnish the mechanistic foundations for macromolecular lignin depolymerization in decaying plant cell walls. The pertinent fungal enzymes comprise lignin peroxidase (with a relatively high redox potential), manganese peroxidase, an alkyl aryl etherase, and ...
Yi-ru, Chen +2 more
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Multimodulation of Enzyme Activity
1981Publisher Summary This chapter discusses the multimodulation of enzyme activity. Multimodulation of enzyme activity arises from the accumulation in a given enzyme of several regulatory mechanisms, whether of different types—cooperative, allosteric, interconversion, or of the same type—multiple allosteric effects, or of any combination of these ...
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Enzymes and Enzyme Activity Encoded by Nonenveloped Viruses
Annual Review of Virology, 2017Viruses are obligate intracellular parasites that rely on host cell machineries for their replication and survival. Although viruses tend to make optimal use of the host cell protein repertoire, they need to encode essential enzymatic or effector functions that may not be available or accessible in the host cellular milieu.
Kimi, Azad +2 more
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Measurement of Enzyme Activities
2017The determination of enzyme activities in organ or organellar extracts is an important means of investigating metabolic networks and allows testing the success of enzyme-targeted genetic engineering. It also delivers information on intrinsic enzyme parameters such as kinetic properties or impact of effector molecules. This chapter provides protocols on
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Activities of proteolytic enzymes
2011Proteases, also known as proteinases or proteolytic enzymes, are a large group of hydrolases that catalyze the cleavage of peptide bonds in proteins to produce peptides and/or amino acids. Classification of proteolytic enzymes is based on three major criteria: type of reaction catalyzed, functional group of the active site, and type of molecular ...
LANDI, LORETTA +3 more
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