ATP4 — Brassica juncea

Summary

BJUB02G52610S (symbol ATP4, also known as BjSOT1) on Indian mustard chromosome B02 encodes a protein containing Smr, PPR and TPR-like helical domains and exhibits rRNA endonuclease and deoxyribonuclease I activities, along with pre-rRNA, ssRNA, mRNA and protein binding. The gene is associated with chloroplast rRNA processing, ribosome biogenesis, group II intron splicing, mRNA stabilization and positive regulation of translation, and its product localizes to the chloroplast stroma, mitochondria and cytoplasm. It has been connected to cytoplasmic male sterility and rRNA processing. Related genes in other species link the family to photochemical quenching and various climate-response phenotypes.