منابع مشابه
Dehydropeptidase activity in certain animal and plant tissues.
In 1932, Bergmann and Schleich (1) observed that glycerol extracts of swine kidney and pancreas possess the capacity of hydrolyzing glycyldehydrophenylalanine (glycyl-cr-aminophenylacrylic acid) to glycine, ammonia, and phenylpyruvic acid. To the enzyme system responsible, whose distinction from dipeptidase, carboxypeptidase, and aminopeptidase was demonstrated, they gave the designation of deh...
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This specific phosphatase is a 5-nucleotidase; it differs from the alkaline phosphatase in its range of action and in its optimal pH. Whereas alkaline phosphatase, which is non-specific, hydrolyses a great variety of phosphoric esters, the 5-nucleotidase hydrolyses only nucleotides with the phosphate group attached to the fifth carbon of the pentose, that is, muscle adenylic acid (adenosine-5-m...
متن کاملBroad antiviral activity in tissues of crustaceans.
Innate antiviral substances occur in vertebrates and may function as host defenses. Virus infections are common among invertebrates, but little is known about the ability of invertebrates to control viral infections. Pre-existing antiviral substances may be particularly important, since invertebrates lack the antiviral defense conferred by specific immunity. In our study, we found that tissue e...
متن کاملNicotinamide mononucleotide pyrophosphorylase activity in animal tissues.
An enzyme which catalyzes the formation of nicotinamide mononucleotide in the presence of nicotinamide, S-phosphoribosylpyrophosphate, adenosine triphosphate, and Mgff has been purified from rat liver. The reaction is highly specific for ATP and is not substituted for by a variety of nucleotides. Enzymic activity has been found in all of the tissues studied, and in the crude homogenate it is ap...
متن کامل-generating activity in potato tuber tissues
Rapid generation of reactive oxygen species (ROS) at the cell surface has been implicated in plant defence responses. Genetic evidence indicates that a plant NADPH oxidase (Rboh; respiratory burst oxidase homologue) is associated with oxidative burst. However, there is not enough physiological evidence of Rboh localization available yet. Isozyme-specific antibodies against potato StrbohA and St...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1946
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(17)41473-6