Purification and properties of rabbit liver phosphorylase phosphatase.
Year: 1975
Type: article
Abstract: 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 35,000, and by sucrose density ultracentrifugation to be 34,000 (2.9 S). On Na dodecyl-SO4 polyacrylamide disc gel electrophoresis a single component with a molecular weight of 34,000 was observed. The pH optimum is 6.9 to 7.4, and the Km for rabbit muscle phosphorylase alpha is 2 muM. The same procedure is also applicable to the extensive purification of phosphorylase phosphatase from rabbit muscle.
Source: Journal of Biological Chemistry
Authors: H Brandt, ZL Capulong, EY Lee
Language: English
Subfield: Biochemistry
Domain: Life Sciences
Open Access status: hybrid
Estimated APC paid: $3,430
OpenAlex ID: W1591116477