CIN4 — Brachypodium distachyon

Summary

Brachypodium distachyon gene CIN4 (BRADI_3G01920V3) encodes a ubiquitin-conjugating enzyme with histone H2B deubiquitinase, metallopeptidase, and ubiquitin ligase activities. It is associated with DNA damage tolerance, proteasomal protein catabolic processes, protein polyubiquitination, endosomal transport, and COP9 signalosome assembly. The gene has been connected to responses to abscisic acid, anthocyanin metabolism, photomorphogenesis regulation, circadian clock entrainment, and floral organ identity specification. CIN4 is linked to traits including boron and zinc sensitivity, UV light sensitivity, photoperiod-sensitive flowering time, drought tolerance, seed dormancy, leaf senescence, and disease resistance responses such as wheat powdery mildew. Studies of related genes in other species connect the family to grain weight, grain protein content, cold tolerance, and heterosis.