DNAJA2 DnaJ heat shock protein family (Hsp40) member A2 [Homo sapiens (human)] - Gene

Summary

Official Symbol: DNAJA2provided by HGNC
Official Full Name: DnaJ heat shock protein family (Hsp40) member A2provided by HGNC
Primary source: HGNC:HGNC:14884
See related: Ensembl:ENSG00000069345 MIM:611322; AllianceGenome:HGNC:14884
Gene type: protein coding
RefSeq status: REVIEWED
Organism: Homo sapiens
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as: DJ3; CPR3; DJA2; DNAJ; DNJ3; RDJ2; HIRIP4; PRO3015
Summary: The protein encoded by this gene belongs to the evolutionarily conserved DNAJ/HSP40 family of proteins, which regulate molecular chaperone activity by stimulating ATPase activity. DNAJ proteins may have up to 3 distinct domains: a conserved 70-amino acid J domain, usually at the N terminus; a glycine/phenylalanine (G/F)-rich region; and a cysteine-rich domain containing 4 motifs resembling a zinc finger domain. The product of this gene works as a cochaperone of Hsp70s in protein folding and mitochondrial protein import in vitro. [provided by RefSeq, Jul 2008]
Expression: Ubiquitous expression in testis (RPKM 26.8), heart (RPKM 23.4) and 25 other tissues See more
Orthologs: mouse all
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Genomic context

Location:: 16q11.2

Exon count:: 9

Annotation release	Status	Assembly	Chr	Location
RS_2023_03	current	GRCh38.p14 (GCF_000001405.40)	16	NC_000016.10 (46955362..46973674, complement)
RS_2023_03	current	T2T-CHM13v2.0 (GCF_009914755.1)	16	NC_060940.1 (52752176..52770493, complement)
105.20220307	previous assembly	GRCh37.p13 (GCF_000001405.25)	16	NC_000016.9 (46989274..47007585, complement)

Chromosome 16 - NC_000016.10 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Go to reference sequence details

Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Expression

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See details

Project title: HPA RNA-seq normal tissues
Description: RNA-seq was performed of tissue samples from 95 human individuals representing 27 different tissues in order to determine tissue-specificity of all protein-coding genes
BioProject: PRJEB4337
Publication: PMID 24309898
Analysis date: Wed Apr 4 07:08:55 2018

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Hsp40 proteins phase separate to chaperone the assembly and maintenance of membraneless organelles.
Title: Hsp40 proteins phase separate to chaperone the assembly and maintenance of membraneless organelles.
overexpressing DNAJA2 but not DNAJA1 enhanced CFTR degradation at the endoplasmic reticulum by Hsc70/Hsp70 and the E3 ubiquitin ligase CHIP. Excess Hsp70 also promoted CFTR degradation, but this occurred through the lysosomal pathway and required CHIP but not complex formation with HOP and Hsp90.
Title: Hsp70 and DNAJA2 limit CFTR levels through degradation.
Study shows that Hsp40 and Hsp70 recognize a region of the androgen receptor (AR) N-terminal domain (NTD), including a FQNLF motif, that interacts with the AR ligand-binding domain (LBD) upon activation. This suggests that competition between molecular chaperones and the LBD for the FQNLF motif regulates AR activation.
Title: Hsp70 and Hsp40 inhibit an inter-domain interaction necessary for transcriptional activity in the androgen receptor.
we combined the Hsp70-NEF pairs with cochaperones of the J protein family (DnaJA1, DnaJA2, DnaJB1, and DnaJB4) to generate 16 permutations.
Title: Binding of human nucleotide exchange factors to heat shock protein 70 (Hsp70) generates functionally distinct complexes in vitro.
The DNAJA2 substrate release mechanism is essential for chaperone-mediated folding.
Title: The DNAJA2 substrate release mechanism is essential for chaperone-mediated folding.
Hsp40 type 1 chaperones DJA1 (DNAJA1/Hdj2) and DJA2 (DNAJA2) as key modulators of hERG degradation
Title: Hsp40 chaperones promote degradation of the HERG potassium channel.
Rdj2 modulates G protein signaling and further suggest that chaperoning G proteins is an emerging theme of the J protein network.
Title: RDJ2 (DNAJA2) chaperones neural G protein signaling pathways.
Bag1 NEF increased refolding by Hsc70 and DJA2, as did the newly characterized NEF Hsp110
Title: Functional divergence between co-chaperones of Hsc70.

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Phenotypes

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Find tests for this gene in the NIH Genetic Testing Registry (GTR)

Review eQTL and phenotype association data in this region using PheGenI

Variation

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See variants in ClinVar

See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

See Variation Viewer (GRCh38)

HIV-1 interactions

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Replication interactions

Interaction	Pubs
Knockdown of DnaJ (Hsp40) homolog, subfamily A, member 2 (DNAJA2) by siRNA inhibits HIV-1 replication in HeLa P4/R5 cells	PubMed

Protein interactions

Protein	Gene	Interaction	Pubs
Vif	vif	HIV-1 Vif interacts with DNAJA2; interaction predicted to be relevant in protein folding and/or macromolecular structure assembly	PubMed

Go to the HIV-1, Human Interaction Database

Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Markers

D16S2924 (e-PCR)
- UniSTS:153675

MARC_28645-28646:1043420928:1 (e-PCR)
- UniSTS:269142

D16S2601E (e-PCR)
- UniSTS:151669

D16S424E (e-PCR)
- UniSTS:147377

DNAJA2_7969 (e-PCR)
- UniSTS:467652

RH70485 (e-PCR)
- UniSTS:86769

Gene Ontology Provided by GOA

Function	Evidence Code	Pubs
enables ATP binding	IEA Inferred from Electronic Annotation more info
enables ATPase activator activity	IDA Inferred from Direct Assay more info	PubMed
enables Hsp70 protein binding	IEA Inferred from Electronic Annotation more info
enables metal ion binding	IEA Inferred from Electronic Annotation more info
enables protein binding	IPI Inferred from Physical Interaction more info	PubMed
enables protein-folding chaperone binding	IBA Inferred from Biological aspect of Ancestor more info	PubMed
enables protein-folding chaperone binding	IPI Inferred from Physical Interaction more info	PubMed
enables unfolded protein binding	IDA Inferred from Direct Assay more info	PubMed

Process	Evidence Code	Pubs
involved_in positive regulation of cell population proliferation	TAS Traceable Author Statement more info	PubMed
involved_in protein refolding	IBA Inferred from Biological aspect of Ancestor more info	PubMed
involved_in protein refolding	IDA Inferred from Direct Assay more info	PubMed
involved_in response to heat	IEA Inferred from Electronic Annotation more info

Component	Evidence Code	Pubs
is_active_in cytoplasm	IBA Inferred from Biological aspect of Ancestor more info	PubMed
is_active_in cytosol	IBA Inferred from Biological aspect of Ancestor more info	PubMed
located_in cytosol	IDA Inferred from Direct Assay more info	PubMed
located_in cytosol	TAS Traceable Author Statement more info
located_in extracellular exosome	HDA more info	PubMed
located_in membrane	IEA Inferred from Electronic Annotation more info

General protein information

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Preferred Names: dnaJ homolog subfamily A member 2

Names: DnaJ (Hsp40) homolog, subfamily A, member 2; HIRA interacting protein 4; cell cycle progression 3 protein; cell cycle progression restoration gene 3 protein; renal carcinoma antigen NY-REN-14

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.