Tubulin beta-4A chain

TUBB4A
Identifiers
Aliases TUBB4A, DYT4, TUBB4, TUBB5, beta-5, tubulin beta 4A class IVa
External IDs MGI: 107848 HomoloGene: 55952 GeneCards: TUBB4A
RNA expression pattern


More reference expression data
Orthologs
Species Human Mouse
Entrez

10382

22153

Ensembl

ENSG00000104833

ENSMUSG00000062591

UniProt

P04350

Q9D6F9

RefSeq (mRNA)

NM_009451

RefSeq (protein)

NP_033477.2

Location (UCSC) Chr 19: 6.49 – 6.5 Mb Chr 17: 57.08 – 57.09 Mb
PubMed search [1] [2]
Wikidata
View/Edit HumanView/Edit Mouse

Tubulin beta-4A chain is a protein that in humans is encoded by the TUBB4A gene. Two tubulin beta-4 chain proteins are encoded in the human genome by the genes TUBB4A (this entry) and TUBB4B.[3][4][5] Tubulin is the major constituent of microtubules, a key components of the cytoskeleton. It binds two moles of GTP, one at an exchangeable site on the beta-chain and one at a non-exchangeable site on the alpha-chain. TUBB4A is preferentially and highly expressed in the central nervous system.[6]

Clinical signficance

Mutations in TUBB4A have been associated with two neurological disorders.

An R2G substitution in the autoregulatory MREI domain of TUBB4A has been identified as the cause of 'hereditary whispering dysphonia' or DYT4.[7][8]

A de novo D249N mutation has been identified as the cause of a rare leukoencephalopathy, hypomyelination with atrophy of the basal ganglia and cerebellum (H-ABC).[9][10]

Mutations in TUBB4A are associated to Pelizaeus-Merzbacher disease .[11]

References

  1. "Human PubMed Reference:".
  2. "Mouse PubMed Reference:".
  3. Hall JL, Dudley L, Dobner PR, Lewis SA, Cowan NJ (Aug 1983). "Identification of two human beta-tubulin isotypes". Mol Cell Biol. 3 (5): 854–62. doi:10.1128/mcb.3.5.854. PMC 368608Freely accessible. PMID 6865944.
  4. Lee MG, Loomis C, Cowan NJ (Sep 1984). "Sequence of an expressed human beta-tubulin gene containing ten Alu family members". Nucleic Acids Res. 12 (14): 5823–36. doi:10.1093/nar/12.14.5823. PMC 320034Freely accessible. PMID 6462917.
  5. "Entrez Gene: TUBB4 tubulin, beta 4".
  6. "UCSC Genome Browser: TUBB4A microarray expression".
  7. Hersheson J, Mencacci NE, Davis M, Macdonald N, Trabzuni D, Ryten M, Pittman A, Paudel R, Kara E, Fawcett K, Plagnol V, Bhatia KP, Medlar AJ, Stanescu HC, Hardy J, Kleta R, Wood NW, Houlden H (December 2012). "Mutations in the autoregulatory domain of β-tubulin 4a cause hereditary dystonia". Ann. Neurol. 73: 546–553. doi:10.1002/ana.23832. PMC 3698699Freely accessible. PMID 23424103.
  8. Online Mendelian Inheritance in Man (OMIM) Dystonia 4, torsion, autosomal dominant; DYT4 -128101
  9. Simons C, Wolf NI, McNeil N, Caldovic L, Devaney JM, Takanohashi A, Crawford J, Ru K, Grimmond SM, Miller D, Tonduti D, Schmidt JL, Chudnow RS, van Coster R, Lagae L, Kisler J, Sperner J, van der Knaap MS, Schiffmann R, Taft RJ, Vanderver A (May 2013). "A de novo mutation in the β-tubulin gene TUBB4A results in the leukoencephalopathy hypomyelination with atrophy of the basal ganglia and cerebellum". Am. J. Hum. Genet. 92 (5): 767–73. doi:10.1016/j.ajhg.2013.03.018. PMID 23582646.
  10. Online Mendelian Inheritance in Man (OMIM) Leukodystrophy, hypomyelinating, with atrophy of the basal ganglia and cerebellum; HABC -128101
  11. Shimojima, K; Okumura, A; Ikeno, M; Nishimura, A; Saito, A; Saitsu, H; Matsumoto, N; Yamamoto, T (2014). "A de novo TUBB4A mutation in a patient with hypomyelination mimicking Pelizaeus-Merzbacher disease". Brain & development. 37: 281–5. doi:10.1016/j.braindev.2014.05.004. PMID 24974158.

Further reading


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