منابع مشابه
Purification studies of tyrosine-alpha-ketoglutaric acid transaminase.
Recent studies in vitro of tyrosine metabolism have revealed the distribution and the r&e of the tyrosine-a-ketoglutaric acid transaminase system (l-8). In certain of these studies the obligatory rBle of this transaminase as a first step in the conversion of tyrosine to homogentisic acid has been indicated (6-S). The present study is concerned with the partial purification of dog liver tyrosine...
متن کاملStudies on Cytochrome Oxidase
Ever since cytochrome oxidase was first solubilized from heart muscle preparations by Yakushiji and Okunuki (1) and Straub (2) in 1941, the further purification of this enzyme has been the subject of studies by many workers, using extraction with bile salts (3-14), or digestive enzymes such as trypsin (6, 7) and snake venom (15), fractionation with ammonium sulfate (5-14), chromatography (9, 12...
متن کاملStudies on cytochrome oxidase. IV. The cytochrome oxidase activity.
where the activity is determined by measuring the rate of oxidation of reduced cytochrome c. Smith (6, 7), Conrad (8, 9), Wainio (10-13) et ~2. have extensively investigated the effect of various factors on the cytochrome oxidase activity measured by System 2 with soluble and insoluble preparations of cytochrome oxidase, whereas among those (14-30) who have employed System 1, Slater (5), using ...
متن کاملStudies on purified 3-hydroxyanthranilic acid oxidase.
3-Hydroxyanthranilic acid oxidase is known to cat,alyze the oxidation of 3-hydroxyanthranilic acid to a very unstable aliphatic compound, which may either be spontaneously transformed into quinolinic acid or undergo enzymic conversion to picolinic or nicotinic acid, or both (l-3). According to Mason (4), this enzyme has been classified as an “oxygen transferase,” since the oxygen consumed, 1 mo...
متن کاملStudies on monoamine oxidase. (Report XXV). Effects of alcohols on beef liver mitochondrial monoamine oxidase.
The effects of alcohols on MAO activity in beef and rat liver mitochondria were studied. MAO activity was determined manometrically using tyramine (1× 10-2 M) as substrate and expressed as O2 uptake in 60 min. At concentrations of 0.1 to 10%, methanol and ethanol increased MAO activity in both beef and rat liver mitochondria. Activation of MAO by ethanol was reversib...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1952
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)55641-6