InnateDB: Systems Biology of the Innate Immune Response

Bos taurus Protein: PAXIP1

Summary

InnateDB Protein

IDBP-690252.2

Last Modified

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

Gene Symbol

PAXIP1

Protein Name

PAX-interacting protein 1

Synonyms

Species

Bos taurus

Ensembl Protein

ENSBTAP00000023287

InnateDB Gene

IDBG-638164 (PAXIP1)

Protein Structure

UniProt Annotation

Function

Involved in DNA damage response and in transcriptional regulation through histone methyltransferase (HMT) complexes. Plays a role in early development. In DNA damage response is required for cell survival after ionizing radiation. In vitro shown to be involved in the homologous recombination mechanism for the repair of double-strand breaks (DSBs). Its localization to DNA damage foci requires RNF8 and UBE2N. Recruits TP53BP1 to DNA damage foci and, at least in particular repair processes, effective DNA damage response appears to require the association with TP53BP1 phosphorylated by ATM. Together with TP53BP1 regulates ATM association. Recruits PAGR1 to sites of DNA damage and the PAGR1:PAXIP1 complex is required for cell survival in response to DNA damage; the function is probbaly independent of MLL-containing histone methyltransferase (HMT) complexes. Promotes ubiquitination of PCNA following UV irradiation and may regulate recruitment of polymerase eta and RAD51 to chromatin after DNA damage. Proposed to be involved in transcriptional regulation by linking MLL-containing histone methyltransferase (HMT) complexes to gene promoters by interacting with promoter-bound transcription factors such as PAX2. Associates with gene promoters that are known to be regulated by KMT2D/MLL2. During immunoglobulin class switching in activated B-cells is involved in trimethylation of histone H3 at 'Lys-4' and in transcription initiation of downstream switch regions at the immunoglobulin heavy-chain (Igh) locus; this function appears to involve the recruitment of MLL- containing HMT complexes (By similarity). {ECO:0000250}.

Subcellular Localization

Nucleus matrix {ECO:0000250}.

Disease Associations

Tissue Specificity

Comments

Interactions

Number of Interactions

This gene and/or its encoded proteins are associated with 0 experimentally validated interaction(s) in this database.
They are also associated with 241 interaction(s) predicted by orthology.

Predicted by orthology
Total	241 [view]

Gene Ontology

Molecular Function

Accession

GO Term

Biological Process

GO:0006281	DNA repair
GO:0006310	DNA recombination
GO:0006351	transcription, DNA-templated
GO:0006355	regulation of transcription, DNA-templated
GO:0006974	cellular response to DNA damage stimulus