STO — Arabidopsis thaliana

Summary

AT1G06040, also known as STO, BBX24 or SALT TOLERANCE, encodes a B-box zinc finger protein. It is annotated with DNA-binding transcription factor activity, transcription coactivator activity, ubiquitin ligase activity, and other molecular functions. This Arabidopsis thaliana gene is associated with the regulation of photomorphogenesis, shade avoidance, circadian rhythm, anthocyanin and flavonoid metabolism, and responses to UV-A, superoxide and salt stress. It has been linked to traits including sodium content, cadmium concentration, submergence tolerance, seedling cotyledon number and size, leaf elongation rate, inflorescence height, stem length, seed set, and root system morphology. The protein localises to the nucleus and cytoplasm, and is part of the Cul4-RING E3 ubiquitin ligase complex. Studies of related genes in other species link the family to floral induction, DELLA protein stability, nitrogen metabolism, and susceptibility to hemibiotrophs.