TT8 — Arabidopsis thaliana

Summary

AT4G09820, designated TT8 (TRANSPARENT TESTA 8) on Arabidopsis thaliana chromosome 4, encodes a protein containing a bHLH domain and is annotated with DNA binding, transcription cis-regulatory region binding, protein dimerization activity, and DNA binding transcription factor activity. TT8 is associated with the regulation of flavonoid, proanthocyanidin and anthocyanin metabolism, including anthocyanin breakdown and the downregulation of sinapate ester anabolism. It is linked to seed oil accumulation, seed color, seed coat proportion and morphology, and seed weight. The gene is also connected to trichome spacing, root epidermal cell length, root hair length, leaf lamina area, stem weight, photosynthetic ability, relative growth rate, and responses to UV-B light, cadmium, and biotic stress. TT8 localizes to both the cytoplasm and nucleus and is associated with sucrose-mediated signaling, glyoxylate metabolism, and glycerolipid anabolism.