AN1 — Asparagus officinalis

Summary

A4U43_C05F32170 (symbol AN1) on asparagus chromosome 5 encodes a peptidase C1A papain C-terminal domain-containing protein with thiol endopeptidase and cysteine-type peptidase activity, placing it in the papain-like cysteine peptidase family. The gene is associated with proteolysis and localises to the aleurone body, lysosome, ER lumen and extracellular space. AN1 has been connected to germination rate. Studies of related genes in other species link the family to additional cysteine proteinases such as mexican, macrodontain I, zingipain-2, fruit bromelain and low-temperature-induced cysteine proteinase, as well as EC numbers 3.4.22.67, 3.4.22.31 and 3.4.22.33, though these associations are not established for asparagus AN1 itself.