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Control properties of yeast glycogen phosphorylase

1971; Elsevier BV; Volume: 42; Issue: 5 Linguagem: Inglês

10.1016/0006-291x(71)90505-5

1090-2104

Fermín Sagardía, I. Gotay, Matilde B. Rodriguez,

Carbohydrate Chemistry and Synthesis

Yeast glycogen phosphorylase is not AMP-sensitive and exists in enzymatically non- interconvertible forms. It is competitively inhibited in vitro by G-6-P and UDPG. Glucose also inhibits. These effectors, however, do not seem to affect the enzyme in vivo. We suggest that this is due to saturation of the enzyme with the substrates intracellularly.