Pyridoxal phosphate-dependent conformational states of glycogen phosphorylase as probed by interconverting enzymes

Autor: G W Tessmer, Donald J. Graves, T J Carty, J R Skuster, Gerald M. Carlson, R F Parrish
Rok vydání: 1975
Předmět:
Zdroj: Journal of Biological Chemistry. 250:2254-2258
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(19)41710-9
Popis: The interaction between pyridoxal 5'-phosphate and the convertible serine of glycogen phosphorylase has been investigated by using: specific interconverting enzymes, phosphorylase kinase and phosphorylase phosphatase; effectors, glucose and glucose 6-phosphate; and a protein kinase and trypsin. Both phosphorylase kinase and phosphorylase phosphatase utilized the native protein while having little influence on the apoprotein. Removal of a peptide containing the critical serine residue gave phosphorylase b' from which the pyridoxal 5'-phosphate in phosphorylase has an important effect on enzymic interconversion.
Databáze: OpenAIRE