Native and Latent Forms of Liver Phosphorylase Phosphatase. The Non-Identity of Native Phosphorylase Phosphatase and Synthase Phosphatase
نویسندگان
چکیده
منابع مشابه
Mammalian phosphorylase phosphatase.
Phosphorylase phosphatase converts phosphorylase a into phosphorylase b. It was the first interconverting enzyme to be discovered (Cori & Green, 1943) and is the best characterized of the protein phosphatases involved in the regulation of glycogen metabolism, although its enzymology is still incompletely understood (for a review see Lee et al., 1976). We have developed a procedure for the isola...
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although there are studies on pragmatic assessment, to date, literature has been almost silent about native and non-native english raters’ criteria for the assessment of efl learners’ pragmatic performance. focusing on this topic, this study pursued four purposes. the first one was to find criteria for rating the speech acts of apology and refusal in l2 by native and non-native english teachers...
15 صفحه اولAssociation of glycogen synthase phosphatase and phosphorylase phosphatase activities with membranes of hepatic smooth endoplasmic reticulum
A detailed investigation was conducted to determine the precise subcellular localization of the rate-limiting enzymes of hepatic glycogen metabolism (glycogen synthase and phosphorylase) and their regulatory enzymes (synthase phosphatase and phosphorylase phosphatase). Rat liver was homogenized and fractionated to produce soluble, rough and smooth microsomal fractions. Enzyme assays of the frac...
متن کاملPurification and properties of rabbit liver phosphorylase phosphatase.
A procedure for the purification of rabbit liver phosphorylase phosphatase is described. The specific activity of the preparation is 2,100 units/mg of protein, representing a 25,000-fold purification. During the initial steps of the purification a large activation of enzyme activity was observed. The molecular weight of the purified enzyme was estimated by Sephadex G-75 chromatography to be 35,...
متن کاملRegulation of liver phosphorylase phosphatase by glutathione disulfide.
The mechanism of inactivation of rabbit liver phosphorylase phosphatase by glutathione disulfide (GSSG) was investigated. The catalytic subunit of phosphorylase phosphatase was inactivated by GSSG and other disulfides. Inactivation by GSSG was a concentration-dependent process and resulted in the formation of an inactive, stable enzyme species. The inactivated enzyme could be reactivated by add...
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ژورنال
عنوان ژورنال: European Journal of Biochemistry
سال: 1978
ISSN: 0014-2956,1432-1033
DOI: 10.1111/j.1432-1033.1978.tb12718.x