InnateDB: Systems Biology of the Innate Immune Response

Mus musculus Protein: Hnrnpk

Summary

InnateDB Protein

IDBP-158282.6

Last Modified

2014-10-13 [Report errors or provide feedback]

Gene Symbol

Hnrnpk

Protein Name

heterogeneous nuclear ribonucleoprotein K

Synonyms

Hnrpk; KBBP; NOVA;

Species

Mus musculus

Ensembl Protein

ENSMUSP00000039269

InnateDB Gene

IDBG-158280 (Hnrnpk)

Protein Structure

UniProt Annotation

Function

One of the major pre-mRNA-binding proteins. Binds tenaciously to poly(C) sequences. Likely to play a role in the nuclear metabolism of hnRNAs, particularly for pre-mRNAs that contain cytidine-rich sequences. Can also bind poly(C) single- stranded DNA. Plays an important role in p53/TP53 response to DNA damage, acting at the level of both transcription activation and repression. When sumoylated, acts as a transcriptional coactivator of p53/TP53, playing a role in p21/CDKN1A and 14-3-3 sigma/SFN induction (By similarity). As far as transcription repression is concerned, acts by interacting with long intergenic RNA p21 (lincRNA-p21), a non-coding RNA induced by p53/TP53. This interaction is necessary for the induction of apoptosis, but not cell cycle arrest. {ECO:0000250, ECO:0000269PubMed:20673990}.

Subcellular Localization

Cytoplasm {ECO:0000250}. Nucleus, nucleoplasm {ECO:0000250}. Cell projection, podosome {ECO:0000250}.

Disease Associations

Tissue Specificity

Comments

Interactions

Number of Interactions

This gene and/or its encoded proteins are associated with 26 experimentally validated interaction(s) in this database.
They are also associated with 164 interaction(s) predicted by orthology.

Experimentally validated
Total	26 [view]
Protein-Protein	26 [view]
Protein-DNA	0
Protein-RNA	0
DNA-DNA	0
RNA-RNA	0
DNA-RNA	0

Predicted by orthology
Total	164 [view]

Gene Ontology

Molecular Function

Accession	GO Term
GO:0003677	DNA binding
GO:0003723	RNA binding
GO:0005515	protein binding

Biological Process

GO:0006351	transcription, DNA-templated
GO:0006355	regulation of transcription, DNA-templated
GO:0006397	mRNA processing
GO:0008380	RNA splicing
GO:1902165	regulation of intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator