gbx2 gastrulation brain homeobox 2 [Danio rerio (zebrafish)] - Gene

Summary

Official Symbol: gbx2provided by ZNC
Official Full Name: gastrulation brain homeobox 2provided by ZNC
Primary source: ZFIN:ZDB-GENE-020509-2
See related: Ensembl:ENSDARG00000002933 AllianceGenome:ZFIN:ZDB-GENE-020509-2
Gene type: protein coding
RefSeq status: PROVISIONAL
Organism: Danio rerio
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Cypriniformes; Danionidae; Danioninae; Danio
Also known as: gbx-2; fd07f12; wu:fd07f12
Summary: Enables DNA-binding transcription factor activity, RNA polymerase II-specific. Acts upstream of or within cerebellum development; iridophore differentiation; and telencephalon regionalization. Predicted to be active in nucleus. Is expressed in several structures, including midbrain hindbrain boundary neural keel; midbrain hindbrain boundary neural rod; midbrain neural rod; nervous system; and presumptive rhombomere 1. Orthologous to human GBX2 (gastrulation brain homeobox 2). [provided by Alliance of Genome Resources, Dec 2024]
Orthologs: human mouse all
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Genomic context

Location:: chromosome: 6

Exon count:: 2

Annotation release	Status	Assembly	Chr	Location
RS_2024_08	current	GRCz11 (GCF_000002035.6)	6	NC_007117.7 (16031186..16034286)
105	previous assembly	GRCz10 (GCF_000002035.5)	6	NC_007117.6 (15904246..15907346)

Chromosome 6 - NC_007117.7 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Genomic Sequence:

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Expression

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See details

Project title: Sequencing the Zebrafish transcriptome from a range of tissues and developmental stages
Description: Sequencing the Zebrafish transcriptome from a range of tissues and developmental stages
BioProject: PRJEB1986
Analysis date: Fri Dec 8 19:48:10 2017

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

that gbx2 induction at 16h post-fertilization repressed the expression of emx3, dlx2a, and six3b in the ventral telencephalon
Title: The role of gastrulation brain homeobox 2 (gbx2) in the development of the ventral telencephalon in zebrafish embryos.
Gbx2 is expressed in neural crest cells and iridophores during development. Gbx2 knockdown leads to apoptosis of neural crest cells. The N-terminal domain of Gbx2 rescues the phenotype of Gbx2 knockdown.
Title: The N-terminal domain of gastrulation brain homeobox 2 (Gbx2) is required for iridophore specification in zebrafish.
gbx2 not only functions to position the midbrain-hindbrain boundary but also regulates neurogenesis in the anterior hindbrain.
Title: Comprehensive analysis of target genes in zebrafish embryos reveals gbx2 involvement in neurogenesis.
Gbx2 functions as a transcriptional repressor to regulate the specification and morphogenesis of the mid-hindbrain junction in a dosage- and stage-dependent manner.
Title: Gbx2 functions as a transcriptional repressor to regulate the specification and morphogenesis of the mid-hindbrain junction in a dosage- and stage-dependent manner.
in the zebrafish gbx1 and gbx2 are required redundantly for morphogenesis of the cerebellar primordium and subsequent cerebellar differentiation, but that this requirement is alleviated by knocking down Otx
Title: Cerebellar development in the absence of Gbx function in zebrafish.
gbx2/Gbx2 has an evolutionarily conserved role in anterior hindbrain development.
Title: Evolutionarily conserved function of Gbx2 in anterior hindbrain development.
gbx2 expression during the somitogenesis stage in zebrafish is regulated by a complex mechanism involving Pax2 as well as activators and suppressors in the regions flanking the gene.
Title: Three enhancer regions regulate gbx2 gene expression in the isthmic region during zebrafish development.
Ectopic expression of gbx2 by mRNA injection caused cyclopia or truncation of the fore- and midbrain and severely affected isthmic and cerebellar structures.
Title: gbx2 Homeobox gene is required for the maintenance of the isthmic region in the zebrafish embryonic brain.
Here we report the isolation, mapping, chromosomal synteny and spatiotemporal expression of gbx1 and gbx2 in zebrafish. We focus in particular on the expression of these genes during development of the midbrain-hindbrain territory.
Title: Cloning, expression and relationship of zebrafish gbx1 and gbx2 genes to Fgf signaling.

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General gene information

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Gene Ontology Provided by ZFIN

Function	Evidence Code	Pubs
enables DNA binding	IEA Inferred from Electronic Annotation more info
enables DNA-binding transcription factor activity, RNA polymerase II-specific	IBA Inferred from Biological aspect of Ancestor more info
enables DNA-binding transcription factor activity, RNA polymerase II-specific	IDA Inferred from Direct Assay more info	PubMed
enables DNA-binding transcription factor activity, RNA polymerase II-specific	IEA Inferred from Electronic Annotation more info
enables RNA polymerase II transcription regulatory region sequence-specific DNA binding	IBA Inferred from Biological aspect of Ancestor more info

Process	Evidence Code	Pubs
acts_upstream_of_or_within cerebellum development	IGI Inferred from Genetic Interaction more info	PubMed
acts_upstream_of_or_within hindbrain development	IMP Inferred from Mutant Phenotype more info	PubMed
acts_upstream_of_or_within iridophore differentiation	IMP Inferred from Mutant Phenotype more info	PubMed
acts_upstream_of_or_within regulation of DNA-templated transcription	IEA Inferred from Electronic Annotation more info
involved_in regulation of nervous system development	IBA Inferred from Biological aspect of Ancestor more info
involved_in regulation of transcription by RNA polymerase II	IBA Inferred from Biological aspect of Ancestor more info
acts_upstream_of_or_within telencephalon regionalization	IMP Inferred from Mutant Phenotype more info	PubMed

Component	Evidence Code	Pubs
is_active_in nucleus	IBA Inferred from Biological aspect of Ancestor more info
located_in nucleus	IEA Inferred from Electronic Annotation more info

General protein information

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Preferred Names: homeobox protein GBX-2

Names: gastrulation brain homeo box 2

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.