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Description: A charge–dipole interaction stabilizes the phosphohistidine intermediate in the succinyl-CoA synthetase reaction. In this schematic, based on the E. coli enzyme structure, the permanent dipoles of two -helices (the “power” helices) are oriented such that the d+ at their N-termini interact with the negative charges on the phosphate group of the active site N-phosphohistidine, stabilizing this transient reaction intermediate. Picture Stats: Views: 271 Filesize: 19.19kB Height: 355 Width: 341 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=34227 |