HAT1 Homeobox-leucine zipper protein 4 (HB-4) / HD-ZIP protein [Arabidopsis thaliana (thale cress)] - Gene

Summary

Official Symbol: HAT1
Official Full Name: Homeobox-leucine zipper protein 4 (HB-4) / HD-ZIP protein
Primary source: TAIR:AT4G17460
Locus tag: AT4G17460
See related: Araport:AT4G17460
Gene type: protein coding
RefSeq status: REVIEWED
Organism: Arabidopsis thaliana (ecotype: Columbia)
Lineage: Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta; Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae; rosids; malvids; Brassicales; Brassicaceae; Camelineae; Arabidopsis
Also known as: DL4765W; FCAALL.65; HOMEOBOX PROTEIN; JAB; JAIBA
Summary: Encodes a class II HD-ZIP protein that regulates meristematic activity in different tissues, and that it is necessary for the correct formation of the gynoecium.
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Chromosome 4 - NC_003075.7 Genomic Context describing neighboring genes

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HD-ZIP transcription factors HAT1 can interact with and be phosphorylated by SnRK23 kinase.
Title: Transcription factor HAT1 is a substrate of SnRK2.3 kinase and negatively regulates ABA synthesis and signaling in Arabidopsis responding to drought.
HAT1 negatively regulates plant defense responses to Cucumber mosaic virus.
Title: Role of Transcription Factor HAT1 in Modulating Arabidopsis thaliana Response to Cucumber mosaic virus.
While BIN2 phosphorylates and destabilizes BES1/BZR1, BIN2 phosphorylated MYBL2 and HAT1 appear to be stabilized.
Title: Transcription factors involved in brassinosteroid repressed gene expression and their regulation by BIN2 kinase.
HAT1 is a BES1 target gene and that HAT1 functions as a BES1 co-repressor. HAT1 appears to function redundantly with other family members such as HAT3 to mediate brassinosteroid (BR) responses.
Title: Transcription factor HAT1 is phosphorylated by BIN2 kinase and mediates brassinosteroid repressed gene expression in Arabidopsis.
The JAB gene regulates meristematic activity in different tissues, and that it is necessary for the correct formation of the gynoecium at different stages, contributing to a crucial process in plant life: proper fruit development.
Title: JAIBA, a class-II HD-ZIP transcription factor involved in the regulation of meristematic activity, and important for correct gynoecium and fruit development in Arabidopsis.

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

NM_117849.4

Function	Evidence Code	Pubs
enables DNA-binding transcription factor activity	ISS Inferred from Sequence or Structural Similarity more info	PubMed
enables DNA-binding transcription factor activity, RNA polymerase II-specific	IEA Inferred from Electronic Annotation more info
enables protein binding	IPI Inferred from Physical Interaction more info	PubMed
enables transcription cis-regulatory region binding	IPI Inferred from Physical Interaction more info	PubMed

Process	Evidence Code	Pubs
acts_upstream_of_or_within developmental process involved in reproduction	IGI Inferred from Genetic Interaction more info	PubMed
acts_upstream_of_or_within floral meristem determinacy	IGI Inferred from Genetic Interaction more info	PubMed
acts_upstream_of_or_within fruit septum development	IGI Inferred from Genetic Interaction more info	PubMed
acts_upstream_of_or_within gynoecium development	IGI Inferred from Genetic Interaction more info	PubMed
acts_upstream_of_or_within meristem development	IGI Inferred from Genetic Interaction more info	PubMed

Component	Evidence Code	Pubs
located_in nucleus	IDA Inferred from Direct Assay more info	PubMed
located_in nucleus	ISM Inferred from Sequence Model more info

NP_193476.1

HAT1; FUNCTIONS IN: DNA binding, sequence-specific DNA binding transcription factor activity; INVOLVED IN: regulation of transcription, DNA-dependent, transcription, regulation of transcription; LOCATED IN: nucleus; EXPRESSED IN: 22 plant structures; EXPRESSED DURING: 13 growth stages; CONTAINS InterPro DOMAIN/s: HD-ZIP protein, N-terminal (InterPro:IPR006712), Helix-turn-helix motif, lambda-like repressor (InterPro:IPR000047), Homeobox (InterPro:IPR001356), Homeobox, conserved site (InterPro:IPR017970), Homeodomain-like (InterPro:IPR009057), Leucine zipper, homeobox-associated (InterPro:IPR003106), Homeodomain-related (InterPro:IPR012287); BEST Arabidopsis thaliana protein match is: Homeobox-leucine zipper protein 4 (HB-4) / HD-ZIP protein (TAIR:AT5G47370.1); Has 7491 Blast hits to 7459 proteins in 526 species: Archae - 0; Bacteria - 0; Metazoa - 5185; Fungi - 268; Plants - 1911; Viruses - 4; Other Eukaryotes - 123 (source: NCBI BLink).

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