HSFB4A/OsHsf-20 transcription factor is upregulated in response to submergence during seed germination and coleoptile growth. It is suggested to bind DNA ssequence of heat shock promoter elements (HSE) {ECO:0000250} and exhibits temperature-dependent phosphorylation. it is likely to form Homotrimer. {ECO:0000250}. The hydrophobic-rich region (HR-A/B) corresponds to the oligomerization domain.
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