Enables glutaminyl-peptide cyclotransferase activity. Located in extracellular region. Is expressed in adult head; embryonic hypopharynx; and organism. Orthologous to human QPCTL (glutaminyl-peptide cyclotransferase like).
FB Description
Glutaminyl cyclase (QC) encodes a glutaminyl-peptide cyclotransferase involved in peptidyl-pyroglutamic acid biosynthesis.