AT3G17609 — Arabidopsis thaliana

Summary

AT3G17609, designated HYH (HY5-homolog) in Arabidopsis thaliana, encodes a bZIP transcription factor with DNA-binding, protein dimerization, and ubiquitin ligase activities, and is localized to the nucleus and cytoplasm. HYH is associated with phytochrome binding and regulation of photosynthesis, anthocyanin metabolism, and circadian rhythm. It is linked to responses to UV-A, UV-B, and blue light, as well as submergence tolerance, nitrate import, and gibberellin catabolism. The gene is associated with traits including seedling hypocotyl length, cotyledon size, root system morphology, inflorescence height, and nutrient responses such as iron, calcium, and phosphorus uptake. Related genes in other species link the family to photomorphogenic growth and light-regulated gene expression.