Immunomodulatory functions of glutaminyl cyclases QPCTL and QPCT
Glutaminyl-peptide cyclotransferase (QPCT, QC) and its isoenzyme glutaminyl-peptide cyclotransferase-like protein (QPCTL, isoQC) are zinc-dependent enzymes that post-translationally catalyze the conversion of N-terminal glutamine or glutamate residues …