2.7.8.43	phosphoprotein	phosphorylation of the putative nucleophile, Thr280	734476	
2.7.8.43	phosphoprotein	the cEptC active site contains a putative nucleophilic threonine, Thr266, covalently bound to a phosphoryl group to form phosphothreonine. Phospho-Thr266 mimics an enzyme reaction intermediate representing the first step in a two-step transferase reaction	-, 739786