TUBB2B tubulin beta 2B class IIb [Homo sapiens (human)] - Gene

Summary

Official Symbol: TUBB2Bprovided by HGNC
Official Full Name: tubulin beta 2B class IIbprovided by HGNC
Primary source: HGNC:HGNC:30829
See related: Ensembl:ENSG00000137285 MIM:612850; AllianceGenome:HGNC:30829
Gene type: protein coding
RefSeq status: REVIEWED
Organism: Homo sapiens
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as: CDCBM7; PMGYSA; bA506K6.1
Summary: The protein encoded by this gene is a beta isoform of tubulin, which binds GTP and is a major component of microtubules. This gene is highly similar to TUBB2A and TUBB2C. Defects in this gene are a cause of asymmetric polymicrogyria. [provided by RefSeq, Mar 2010]
Expression: Biased expression in brain (RPKM 233.4), bone marrow (RPKM 22.7) and 11 other tissues See more
Orthologs: all
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Genomic context

Location:: 6p25.2

Exon count:: 4

Annotation release	Status	Assembly	Chr	Location
RS_2024_08	current	GRCh38.p14 (GCF_000001405.40)	6	NC_000006.12 (3224277..3227653, complement)
RS_2024_08	current	T2T-CHM13v2.0 (GCF_009914755.1)	6	NC_060930.1 (3092680..3096055, complement)
RS_2024_09	previous assembly	GRCh37.p13 (GCF_000001405.25)	6	NC_000006.11 (3224511..3227887, complement)

Chromosome 6 - NC_000006.12 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

TUBB2B facilitates progression of hepatocellular carcinoma by regulating cholesterol metabolism through targeting HNF4A/CYP27A1.
Title: TUBB2B facilitates progression of hepatocellular carcinoma by regulating cholesterol metabolism through targeting HNF4A/CYP27A1.
Periprostatic adipose tissue promotes prostate cancer resistance to docetaxel by paracrine IGF-1 upregulation of TUBB2B beta-tubulin isoform.
Title: Periprostatic adipose tissue promotes prostate cancer resistance to docetaxel by paracrine IGF-1 upregulation of TUBB2B beta-tubulin isoform.
A novel family illustrating the mild phenotypic spectrum of TUBB2B variants.
Title: A novel family illustrating the mild phenotypic spectrum of TUBB2B variants.
the present study identified a novel significant association between the increased expression levels of MAPK10, TUBB2B and RASL11B, and neuroblastoma cells.
Title: Upregulation of MAPK10, TUBB2B and RASL11B may contribute to the development of neuroblastoma.
The results suggest that betaII-tubulin may facilitate cancer growth and metastasis and, to accomplish this, may not need to be in microtubule form.
Title: Over-Expression of βII-Tubulin and Especially Its Localization in Cell Nuclei Correlates with Poorer Outcomes in Colorectal Cancer.
This protein has been found differentially expressed in the temporal lobe from patients with schizophrenia.
Title: Alterations in oligodendrocyte proteins, calcium homeostasis and new potential markers in schizophrenia anterior temporal lobe are revealed by shotgun proteome analysis.
CPAP regulates delivery of its bound beta-tubulin to define the size of microtubule-based cellular structures using a "clutch-like" mechanism.
Title: Molecular basis for CPAP-tubulin interaction in controlling centriolar and ciliary length.
The TUBB2B mutation described here represents an unusual recessive mode of inheritance for missense-mediated tubulinopathies and reinforces the sensitivity of the developing cerebellum to microtubule defects.
Title: Uner Tan syndrome caused by a homozygous TUBB2B mutation affecting microtubule stability.
At the cellular level, the p.Cys239Phe TUBB2B mutant leads to tubulin heterodimerization impairment, decreased ability to incorporate into the cytoskeleton, microtubule dynamics alteration, with an accelerated rate of depolymerization
Title: De novo TUBB2B mutation causes fetal akinesia deformation sequence with microlissencephaly: An unusual presentation of tubulinopathy.
off-target, non-immune mediated effects of the mTOR-inhibitor everolimus on the podocyte cytoskeleton might involve regulation of microtubules, revealing a potential novel role of TUBB2B and DCDC2 in glomerular podocyte development
Title: Everolimus Stabilizes Podocyte Microtubules via Enhancing TUBB2B and DCDC2 Expression.

Submit: New GeneRIF Correction See all GeneRIFs (21)

Phenotypes

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Find tests for this gene in the NIH Genetic Testing Registry (GTR)

Review eQTL and phenotype association data in this region using PheGenI

Associated conditions

Description	Tests
Complex cortical dysplasia with other brain malformations 7 MedGen: C3552236 OMIM: 610031 GeneReviews: Congenital Fibrosis of the Extraocular Muscles Overview, Tubulinopathies Overview	Compare labs

Variation

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See variants in ClinVar

See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

See Variation Viewer (GRCh38)

HIV-1 interactions

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Protein interactions

Protein	Gene	Interaction	Pubs
Rev	rev	HIV-1 Rev interacting protein, tubulin beta 2B class Iib, is identified by the in-vitro binding experiments involving cytosolic or nuclear extracts from HeLa cells	PubMed
Tat	tat	HIV-1 Tat (specifically, amino acids 38-72), enhances tubulin polymerization and triggers the mitochondrial pathway to induce T cell apoptosis as shown in vitro by the release of cytochrome c from isolated mitochondria	PubMed
	tat	HIV-1 Tat K29A, K50R, and K51R lysine mutations downregulate the proportion of soluble tubulin in cells, while the majority of other lysine mutations upregulate the percentage of soluble tubulin compared with the wild-type	PubMed
	tat	In Jurkat cells expressing HIV-1 Tat, decreased expression levels are found for basic cytoskeletal proteins such as actin, beta-tubulin, annexin, cofilin, gelsolin, and Rac/Rho-GDI complex	PubMed

Go to the HIV-1, Human Interaction Database

Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Markers

MARC_24019-24020:1029775248:1 (e-PCR)
- UniSTS:268828

MARC_24021-24022:1029778648:1 (e-PCR)
- UniSTS:268829

PMC314434P1 (e-PCR)
- UniSTS:272947

D6S1785 (e-PCR)
- UniSTS:567

Gene Ontology Provided by GOA

Function	Evidence Code	Pubs
enables GTP binding	IBA Inferred from Biological aspect of Ancestor more info
enables GTPase activity	IEA Inferred from Electronic Annotation more info
enables metal ion binding	IEA Inferred from Electronic Annotation more info
enables protein binding	IPI Inferred from Physical Interaction more info	PubMed
enables protein heterodimerization activity	IDA Inferred from Direct Assay more info	PubMed
enables structural constituent of cytoskeleton	IBA Inferred from Biological aspect of Ancestor more info

Process	Evidence Code	Pubs
involved_in cerebral cortex development	IEA Inferred from Electronic Annotation more info
involved_in embryonic brain development	IEA Inferred from Electronic Annotation more info
involved_in microtubule cytoskeleton organization	IBA Inferred from Biological aspect of Ancestor more info
involved_in microtubule-based process	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in mitotic cell cycle	IBA Inferred from Biological aspect of Ancestor more info
involved_in modulation of chemical synaptic transmission	IEA Inferred from Electronic Annotation more info
involved_in neuron migration	IBA Inferred from Biological aspect of Ancestor more info
involved_in neuron migration	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in positive regulation of axon guidance	IMP Inferred from Mutant Phenotype more info	PubMed

Component	Evidence Code	Pubs
located_in Schaffer collateral - CA1 synapse	IEA Inferred from Electronic Annotation more info
is_active_in cytoplasm	IBA Inferred from Biological aspect of Ancestor more info
located_in intercellular bridge	IDA Inferred from Direct Assay more info
is_active_in microtubule	IBA Inferred from Biological aspect of Ancestor more info
located_in microtubule	IDA Inferred from Direct Assay more info	PubMed
located_in microtubule cytoskeleton	IDA Inferred from Direct Assay more info	PubMed
located_in mitotic spindle	IDA Inferred from Direct Assay more info
located_in nucleus	HDA more info	PubMed

General protein information

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Preferred Names: tubulin beta-2B chain

Names: class II beta-tubulin isotype; class IIb beta-tubulin; epididymis secretory sperm binding protein; tubulin, beta 2B; tubulin, beta polypeptide paralog

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.