CDKN2B

Cyclin-dependent kinase 4 inhibitor B also known as multiple tumor suppressor 2 (MTS-2) or p15INK4b is a protein that is encoded by the CDKN2B gene in humans.[5][6]

CDKN2B
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesCDKN2B, CDK4I, INK4B, MTS2, P15, TP15, p15INK4b, cyclin-dependent kinase inhibitor 2B, cyclin dependent kinase inhibitor 2B
External IDsOMIM: 600431 MGI: 104737 HomoloGene: 55859 GeneCards: CDKN2B
Gene location (Human)
Chr.Chromosome 9 (human)[1]
Band9p21.3Start22,002,903 bp[1]
End22,009,305 bp[1]
RNA expression pattern
More reference expression data
Orthologs
SpeciesHumanMouse
Entrez

1030

12579

Ensembl

ENSG00000147883

ENSMUSG00000073802

UniProt

P42772

P55271

RefSeq (mRNA)

NM_078487
NM_004936

NM_007670

RefSeq (protein)

NP_004927
NP_511042

NP_031696

Location (UCSC)Chr 9: 22 – 22.01 MbChr 4: 89.31 – 89.31 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Function

This gene lies adjacent to the tumor suppressor gene CDKN2A in a region that is frequently mutated and deleted in a wide variety of tumors. This gene encodes a cyclin-dependent kinase inhibitor, also known as p15Ink4b protein, which forms a complex with CDK4 or CDK6, and prevents the activation of the CDK kinases by cyclin D, thus the encoded protein functions as a cell growth regulator that inhibits cell cycle G1 progression. The expression of this gene was found to be dramatically induced by TGF beta, which suggested its role in the TGF beta induced growth inhibition. Two alternatively spliced transcript variants of this gene, which encode distinct proteins, have been reported.[6]

Interactions

CDKN2B has been shown to interact with cyclin-dependent kinase 4.[7][8]

References

  1. GRCh38: Ensembl release 89: ENSG00000147883 - Ensembl, May 2017
  2. GRCm38: Ensembl release 89: ENSMUSG00000073802 - Ensembl, May 2017
  3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. Hannon GJ, Beach D (October 1994). "p15INK4B is a potential effector of TGF-beta-induced cell cycle arrest". Nature. 371 (6494): 257–61. doi:10.1038/371257a0. PMID 8078588. S2CID 4268054.
  6. "Entrez Gene: CDKN2B cyclin-dependent kinase inhibitor 2B (p15, inhibits CDK4)".
  7. Rual JF, Venkatesan K, Hao T, Hirozane-Kishikawa T, Dricot A, Li N, Berriz GF, Gibbons FD, Dreze M, Ayivi-Guedehoussou N, Klitgord N, Simon C, Boxem M, Milstein S, Rosenberg J, Goldberg DS, Zhang LV, Wong SL, Franklin G, Li S, Albala JS, Lim J, Fraughton C, Llamosas E, Cevik S, Bex C, Lamesch P, Sikorski RS, Vandenhaute J, Zoghbi HY, Smolyar A, Bosak S, Sequerra R, Doucette-Stamm L, Cusick ME, Hill DE, Roth FP, Vidal M (October 2005). "Towards a proteome-scale map of the human protein-protein interaction network". Nature. 437 (7062): 1173–8. doi:10.1038/nature04209. PMID 16189514. S2CID 4427026.
  8. Stelzl U, Worm U, Lalowski M, Haenig C, Brembeck FH, Goehler H, Stroedicke M, Zenkner M, Schoenherr A, Koeppen S, Timm J, Mintzlaff S, Abraham C, Bock N, Kietzmann S, Goedde A, Toksöz E, Droege A, Krobitsch S, Korn B, Birchmeier W, Lehrach H, Wanker EE (September 2005). "A human protein-protein interaction network: a resource for annotating the proteome". Cell. 122 (6): 957–68. doi:10.1016/j.cell.2005.08.029. hdl:11858/00-001M-0000-0010-8592-0. PMID 16169070. S2CID 8235923.

Further reading


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