def Removes the formyl group from the N-terminal Met of newly synthesized proteins. Requires at least a dipeptide for an efficient rate of reaction. N-terminal L-methionine is a prerequisite for activity but the enzyme has broad specificity at other positions (By similarity). YPTB3665 170 MSVLQVLHYPDERLRKIAAPVKEVNGEIQRIVDDMFETMYAEEGIGLAATQVDVHQQIIVIDISENRDQRLVLINPELLEKSGETGIEEGCLSIPEQRALVPRAEKVKIRALDRDGKPFELETDGLLAICIQHEMDHLIGKLFVDYLSPLKRQRIRQKLEKMAKLNARAN DEF_YERPS Polypeptide deformylase Peptide deformylase