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HPF1
HPA
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  • HPF1
PROTEIN SUMMARY GENE INFORMATION RNA DATA ANTIBODY DATA
GENERAL INFORMATIONi

General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.

Gene namei

Official gene symbol, which is typically a short form of the gene name, according to HGNC.

HPF1
Synonyms C4orf27, FLJ20534
Gene descriptioni

Full gene name according to HGNC.

Histone PARylation factor 1
Predicted locationi

All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.

  • Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.

  • Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).

The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.

Intracellular
Protein evidence Evidence at protein level (all genes)
GENE INFORMATIONi

Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.

Chromosome 4
Cytoband q33
Chromosome location (bp) 169729470 - 169757944
Number of transcriptsi

Number of protein-coding transcripts from the gene as defined by Ensembl.

1
Ensembl ENSG00000056050 (version 109)
Entrez gene 54969
HGNC HGNC:26051
UniProt Q9NWY4 (UniProt - Evidence at protein level)
neXtProt NX_Q9NWY4
GeneCards HPF1
Antibodypedia HPF1 antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

Cofactor for serine ADP-ribosylation that confers serine specificity on PARP1 and PARP2 and plays a key role in DNA damage response 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15. Initiates the repair of double-strand DNA breaks: recruited to DNA damage sites by PARP1 and PARP2 and switches the amino acid specificity of PARP1 and PARP2 from aspartate or glutamate to serine residues, licensing serine ADP-ribosylation of target proteins 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27. Serine ADP-ribosylation of target proteins, such as histones, promotes decompaction of chromatin and the recruitment of repair factors leading to the reparation of DNA strand breaks 28, 29, 30, 31. Serine ADP-ribosylation of proteins constitutes the primary form of ADP-ribosylation of proteins in response to DNA damage 32. HPF1 acts by completing the active site of PARP1 and PARP2: forms a composite active site composed of residues from HPF1 and PARP1 or PARP2 33, 34. While HPF1 promotes the initiation of serine ADP-ribosylation, it restricts the polymerase activity of PARP1 and PARP2 in order to limit the length of poly-ADP-ribose chains 35, 36, 37. HPF1 also promotes tyrosine ADP-ribosylation, probably by conferring tyrosine specificity on PARP1 38, 39.... show less
Biological process (UniProt)i

Keywords assigned by UniProt to proteins because they are involved in a particular biological process.

DNA damage, DNA repair
Gene summary (Entrez)i

Useful information about the gene from Entrez

Enables chromatin binding activity and histone binding activity. Involved in double-strand break repair; peptidyl-serine ADP-ribosylation; and regulation of protein modification process. Located in chromatin; nucleus; and site of DNA damage. [provided by Alliance of Genome Resources, Apr 2022]... show less
PROTEIN INFORMATIONi

The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.

The Splice variant identifier links to the Ensembl website protein summary for the selected splice variant. The data in the Swissprot and TrEMBL columns links to corresponding pages in the UniProt database.

The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.

The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide and number of predicted transmembrane region(s) according to in-house majority decision methods based on sets of predictors are also reported.
Splice variant SwissProt TrEMBL Protein class Gene ontology Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
HPF1-201
ENSP00000406598
ENST00000393381
Q9NWY4
[Direct mapping] Histone PARylation factor 1
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Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000785 [chromatin]
GO:0003682 [chromatin binding]
GO:0005515 [protein binding]
GO:0005634 [nucleus]
GO:0005694 [chromosome]
GO:0006281 [DNA repair]
GO:0006302 [double-strand break repair]
GO:0006974 [cellular response to DNA damage stimulus]
GO:0010835 [regulation of protein ADP-ribosylation]
GO:0031056 [regulation of histone modification]
GO:0042393 [histone binding]
GO:0072572 [poly-ADP-D-ribose binding]
GO:0090734 [site of DNA damage]
GO:0140768 [protein ADP-ribosyltransferase-substrate adaptor activity]
Show all
346 aa
39.4 kDa
No 0

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