HAP4 — Oryza sativa Indica Group

Summary

BGIOSGA012261 (HAP4, also known as UBQ13, ERD16, and RPL40A) on chromosome 3 of Indica rice encodes a protein containing both a ubiquitin domain and a ribosomal eL40 domain, and is annotated with structural constituent of ribosome, ubiquitin-protein transferase, thiol-dependent deubiquitinase, histone methylase, and DNA-binding activities. This gene is associated with seed morphogenesis, dormancy, and development, grain weight and yield, leaf and root morphology traits, temperature stress responses, salinity tolerance, flowering time, and disease tolerance. It is linked to regulation of abscisic acid anabolism, stomatal lineage progression, trichome branching, endosperm and fruit development, and chromatin modeling. Localization evidence connects the product to ribosomes, endosomes, the ESCRT I complex, and chromosomes. Studies of related genes in other species link the family to seed size, salt and drought tolerance, cell proliferation, and leaf architecture.