ubiquitin-like (Ubl) domain found in homocysteine-inducible endoplasmic reticulum stress protein HERP2 and similar proteins
HERP2, also termed homocysteine-responsive endoplasmic reticulum-resident ubiquitin-like domain member 2 protein (HERPUD2), is an endoplasmic reticulum (ER) integral membrane protein containing an N-terminal ubiquitin-like (Ubl) domain with a beta-grasp Ubl fold. It is homologous to HERP1, and could be involved in the unfolded protein response (UPR) pathway. It regulates the ubiquitin ligase HRD1-dependent protein degradation at the ER.
Feature 1: key conserved lysine K27, 1 residue position
Conserved feature residue pattern:[KR]
Evidence:
Comment:K27 (Ub numbering) is a lysine conserved in the Ubl_ubiquitin_like family; it is one of 7 lysines involved in chain linkage in ubiquitin (K6, K11, K27, K29, K33, K48, or K63, Ub numbering); may have other functions, for example for NEDD8 it is involved in the mechanism of protein neddylation