ID UBIQUITIN_ACTIVAT_1; PATTERN. AC PS00536; DT 01-DEC-1991 CREATED; 01-DEC-2004 DATA UPDATE; 29-MAY-2024 INFO UPDATE. DE Ubiquitin-activating enzyme signature 1. PA K-[AI]-[CL]-S-G-K-[FI]-x-[PQ]. CC /VERSION=1; DO PDOC00463; //