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Title: Effect of chemical modification of a histidine and a lysine residue of pea seed nucleoside diphosphate kinase. Author: Edlund B, Heldin CH, Engström L. Journal: Ups J Med Sci; 1982; 87(3):243-50. PubMed ID: 6297137. Abstract: Chemical modification of a histidine and lysine residue inactivates pea seed nucleoside diphosphate kinase (NDP kinase). Thus there seems to be a reactive lysine residue, at the active site of pea seed NDP kinase, in addition to the histidine residue phosphorylated by the substrate ATP as a consequence of the enzyme reaction. The presence of a reactive lysine at the active site of the enzyme could explain why a small amount of N-epsilon-phospholysine, as well as 1-phosphohistidine and 3-phosphohistidine, is formed on alkaline hydrolysis of the enzyme.[Abstract] [Full Text] [Related] [New Search]