glutaminyl-peptide cyclotransferase activity
Catalysis of the reaction: N-terminal L-glutaminyl-[peptide] = N-terminal 5-oxo-L-prolyl-[peptide] + NH4+.
GO:0016755
aminoacyltransferase activity
is_a
GO:0140096
catalytic activity, acting on a protein
is_a
L-glutaminyl-peptide gamma-glutamyltransferase (cyclizing)
related
glutaminyl cyclase activity
related
glutaminyl-tRNA cyclotransferase activity
narrow
glutaminyl-transfer ribonucleate cyclotransferase activity
related