SR1 — Brassica oleracea var. botrytis

Summary

BoSR1, encoded by gene BOLND125_C04P000770.1 on cauliflower chromosome 4, produces a protein with ubiquitin ligase activity that binds ribosomes, mRNA, transcription cis-regulatory regions, and other proteins. The protein localises to the nucleus and belongs to the ZNF598/HEL2 family, containing RING-HC, C2H2 zinc-finger, and PAH domains. BoSR1 is associated with protein ubiquitination, rescue of stalled cytosolic ribosomes, and response to flooding. It has also been linked to increased oxidative stress sensitivity. Studies of related genes in other species connect the family to enhanced submergence tolerance, though this has not been established in cauliflower.