Two glutamate residues, Glu 208 alpha and Glu 197 beta, are crucial for phosphorylation and dephosphorylation of the active-site histidine residue in succinyl-CoA synthetase.


Succinyl-CoA synthetase catalyzes the reversible reaction succinyl-CoA + NDP + P(i) <--> succinate + CoA + NTP (N denoting adenosine or guanosine). The enzyme consists of two different subunits, designated alpha and beta. During the reaction, a histidine residue of the alpha-subunit is transiently phosphorylated. This histidine residue interacts with Glu… (More)


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