After several years of serving the research community, our ActiveDriverDB database will be retired on May 1st 2026. Please make sure to download any data you need and update your links or workflows before that date.

We want to sincerely thank all our users for their support, feedback, and collaboration over the years — your contributions have been invaluable to this project. A special thank you to Dr. Michal Krassowski for leading the development of our open-source software and database.

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CDKN2B (NM_004936) - cyclin dependent kinase inhibitor 2B

Cyclin-Dependent Kinase 4 Inhibitor B Isoform 1

PTM Interaction Network Visualisation

Protein summary

This is preferred isoform of CDKN2B protein. View all 2 isoforms
CDKN2B: cyclin-dependent kinase 4 inhibitor B isoform 1
Description:

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, which forms a complex with CDK4 or CDK6, and prevents the activation of the CDK kinases, thus the encoded protein functions as a cell growth regulator that controls 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. [provided by RefSeq, Jul 2008].

Strand
-
Chromosome
9
Protein
138 residues
All mutations
20
PTM sites
1
CDS
22,005,985 - 22,008,952
Transcription
22,002,901 - 22,009,312
9.42% of sequence is predicted to be disordered

Usage summary

Network

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scroll to zoom in and out

PTM site

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Kinases group

double click to show/hide all kinases within the group.

Kinase, PTM site or protein

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shift + click to free a node which was stuck earlier

External references

Mappings retrieved from NCBI & UniProt.
RefSeq
Entrez
gene: 1030
UniProt
Ensembl