Protein name:
Cyclin-dependent kinase inhibitor 2A, isoform 3;
Alternative:
p19ARF;
Organism:
Cdkn2a3 (Mus musculus).
General Annotation
Sub Unit:
Does not interact with cyclins, CDK1, CDK2, CDK4, CDK5 or CDK6. Interacts with COMMD1 (By similarity). Binds to BCL6, E2F1, HUWE1, MDM2, MYC, NPM1/B23, TOP1/TOPOI and UBE2I/UBC9. Interacts with TBRG1. Interacts with CDKN2AIP and E4F1.
Function:
Capable of inducing cell cycle arrest in G1 and G2 phases. Acts as a tumor suppressor. Binds to MDM2 and blocks its nucleocytoplasmic shuttling by sequestering it in the nucleolus. This inhibits the oncogenic action of MDM2 by blocking MDM2-induced degradation of p53 and enhancing p53-dependent transactivation and apoptosis. Also induces G2 arrest and apoptosis in a p53-independent manner by preventing the activation of cyclin B1/CDC2 complexes. Binds to BCL6 and down-regulates BCL6-induced transcriptional repression. Binds to E2F1 and MYC and blocks their transcriptional activator activity but has no effect on MYC transcriptional repression. Binds to TOP1/TOPOI and stimulates its activity. This complex binds to rRNA gene promoters and may play a role in rRNA transcription and/or maturation. Interacts with NPM1/B23 and promotes its polyubiquitination and degradation, thus inhibiting rRNA processing. Interacts with COMMD1 and promotes its 'Lys63'-linked polyubiquitination (By similarity). Interacts with UBE2I/UBC9 and enhances sumoylation of a number of its binding partners including MDM2 and E2F1. Binds to HUWE1 and represses its ubiquitin ligase activity. May play a role in controlling cell proliferation and apoptosis during mammary gland development.
Subcellular Location:
Nucleus
nucleolus
Nucleus
nucleoplasm
Protein Attributes:
50:
MGRRFLVTVR | IQRAGRPLQE | RVFLVKFVRS | RRPRTASCAL | AFVNMLLRLE |
100:
RILRRGPHRN | PGPGDDDGQR | SRSSSSAQLR | CRFELRGPHY | LLPPGARRSA |
150:
GRLPGHAGGA | ARVRGSAGCA | RCLGSPAARL | GPRAGTSRHR | AIFAFRWVLF |
169:
VFRWVVFVYR | WERRPDRRA

Vaild Sequence:
Related Databases
Uniprot: