HSPA1A heat shock protein family A (Hsp70) member 1A [ Homo sapiens (human) ]

Gene ID: 3303, updated on 25-Nov-2025

Summary

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Official Symbol: HSPA1Aprovided by HGNC
Official Full Name: heat shock protein family A (Hsp70) member 1Aprovided by HGNC
Primary source: HGNC:HGNC:5232
See related: Ensembl:ENSG00000204389 MIM:140550; AllianceGenome:HGNC:5232
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: HSP70; HSP72; HSPA1; HSP70I; HSP70-1; HSP70-2; HSP70.1; HSP70.2; HSP70-1A; HEL-S-103
Summary: This intronless gene encodes a 70kDa heat shock protein which is a member of the heat shock protein 70 family. In conjuction with other heat shock proteins, this protein stabilizes existing proteins against aggregation and mediates the folding of newly translated proteins in the cytosol and in organelles. It is also involved in the ubiquitin-proteasome pathway through interaction with the AU-rich element RNA-binding protein 1. The gene is located in the major histocompatibility complex class III region, in a cluster with two closely related genes which encode similar proteins. [provided by RefSeq, Jul 2008]
Orthologs: mouse all
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Genomic context

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See HSPA1A in Genome Data Viewer

Location:: 6p21.33

Exon count:: 1

Annotation release	Status	Assembly	Chr	Location
RS_2025_08	current	GRCh38.p14 (GCF_000001405.40)	6	NC_000006.12 (31815543..31817942)
RS_2025_08	current	T2T-CHM13v2.0 (GCF_009914755.1)	6	NC_060930.1 (31668600..31670999)
RS_2024_09	previous assembly	GRCh37.p13 (GCF_000001405.25)	6	NC_000006.11 (31783320..31785719)

Chromosome 6 - NC_000006.12 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Exploring the Roles of Key Mediators IKBKE and HSPA1A in Alzheimer's Disease and Hepatocellular Carcinoma through Bioinformatics Analysis.
Title: Exploring the Roles of Key Mediators IKBKE and HSPA1A in Alzheimer's Disease and Hepatocellular Carcinoma through Bioinformatics Analysis.
Heat shock protein 72 supports extracellular matrix production in metastatic mammary tumors.
Title: Heat shock protein 72 supports extracellular matrix production in metastatic mammary tumors.
Downregulation of Heat Shock Protein 72 Contributes to Fibrostenosis in Crohn's Disease.
Title: Downregulation of Heat Shock Protein 72 Contributes to Fibrostenosis in Crohn's Disease.
A Genomic Study of the Japanese Population Focusing on the Glucocorticoid Receptor Interactome Highlights Distinct Genetic Characteristics Associated with Stress Response.
Title: A Genomic Study of the Japanese Population Focusing on the Glucocorticoid Receptor Interactome Highlights Distinct Genetic Characteristics Associated with Stress Response.
Association of elevated extracellular HSP72 in albuminuria with systemic inflammation and disease progression in type 2 diabetic kidney disease.
Title: Association of elevated extracellular HSP72 in albuminuria with systemic inflammation and disease progression in type 2 diabetic kidney disease.
Heat Shock Protein 70 Is Involved in the Efficiency of Preconditioning with Cyclosporine A in Renal Ischemia Reperfusion Injury by Modulating Mitochondrial Functions.
Title: Heat Shock Protein 70 Is Involved in the Efficiency of Preconditioning with Cyclosporine A in Renal Ischemia Reperfusion Injury by Modulating Mitochondrial Functions.
ZNF330/NOA36 interacts with HSPA1 and HSPA8 and modulates cell cycle and proliferation in response to heat shock in HEK293 cells.
Title: ZNF330/NOA36 interacts with HSPA1 and HSPA8 and modulates cell cycle and proliferation in response to heat shock in HEK293 cells.
Analysis of the heat shock protein 70 (HSP70) genetic variants in nonsegmental vitiligo patients.
Title: Analysis of the heat shock protein 70 (HSP70) genetic variants in nonsegmental vitiligo patients.
Heat Shock Protein Family A Member 1 Promotes Intracellular Amplification of Hepatitis B Virus Covalently Closed Circular DNA.
Title: Heat Shock Protein Family A Member 1 Promotes Intracellular Amplification of Hepatitis B Virus Covalently Closed Circular DNA.
Targeting heat shock proteins 90 and 70: A promising remedy for both autoimmune bullous diseases and COVID-19.
Title: Targeting heat shock proteins 90 and 70: A promising remedy for both autoimmune bullous diseases and COVID-19.

Submit: New GeneRIF Correction See all GeneRIFs (282)

Phenotypes

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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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Protein interactions

Protein	Gene	Interaction	Pubs
Envelope surface glycoprotein gp120	env	Tandem affinity purification and mass spectrometry analysis identify heat shock 70kDa protein 1A (HSPA1A), HIV-1 Gag, Gag/Pol, gp120, and Nef incorporated into staufen1 RNP complexes isolated from HIV-1-expressing cells	PubMed
	env	Over expression of hsp70 with a herpes viral amplicon vector protects cultured hippocampal rat neurons from gp120 neurotoxicity	PubMed
	env	The exposure of permissive CD4+ cells to HIV-1 gp120 increases the synthesis and nuclear translocation of 70kDa heat shock protein	PubMed
Gag-Pol	gag-pol	Tandem affinity purification and mass spectrometry analysis identify heat shock 70kDa protein 1A (HSPA1A), HIV-1 Gag, Gag/Pol, gp120, and Nef incorporated into staufen1 RNP complexes isolated from HIV-1-expressing cells	PubMed
Nef	nef	Tandem affinity purification and mass spectrometry analysis identify heat shock 70kDa protein 1A (HSPA1A), HIV-1 Gag, Gag/Pol, gp120, and Nef incorporated into staufen1 RNP complexes isolated from HIV-1-expressing cells	PubMed
	nef	Heat shock proteins Hsp40 and Hsp70 interact with HIV-1 Nef and form a complex in cells	PubMed
	nef	HIV-1 Nef suppresses Hsp70-mediated HIV-1 Tat activation	PubMed
Pr55(Gag)	gag	Tandem affinity purification and mass spectrometry analysis identify heat shock 70kDa protein 1A (HSPA1A), HIV-1 Gag, Gag/Pol, gp120, and Nef incorporated into staufen1 RNP complexes isolated from HIV-1-expressing cells	PubMed
	gag	Hsp70 co-sediments with HIV-1 capsid protein in sucrose density gradients, providing evidence that it is specifically incorporated into HIV-1 virions through an interaction with HIV-1 Gag proteins	PubMed
	gag	Hsp70 is incorporated into HIV-1 virions through an interaction with HIV-1 Gag	PubMed
Tat	tat	Heat shock 70kDa protein 1A (HSPA1A) is identified to interact with HIV-1 Tat mutant Nullbasic in HeLa cells by LC MS/MS	PubMed
	tat	HIV-1 Nef suppresses Hsp70-mediated HIV-1 Tat activation	PubMed
	tat	Hsp70 and Hsp90 and Cdc37 regulate the stabilization and folding of CDK9 as well as the assembly of an active CDK9/cyclin T1 complex responsible for P-TEFb-mediated HIV-1 Tat transactivation	PubMed
Vif	vif	HIV-1 Vif interacts with HSPA1A; interaction predicted to be relevant in protein folding and/or macromolecular structure assembly	PubMed
Vpr	vpr	HIV-1 Vpr is required for the inhibitory effect of Hsp70 on viral gene expression and replication	PubMed
	vpr	HIV-1 Vpr binds to Hsp70 in coimmunoprecipitation assays	PubMed
	vpr	Overexpression of Heat shock protein 70 (Hsp70) in yeast and mammalian cells inhibits HIV-1 Vpr-induced cell cycle G2 arrest, and suppression of Hsp70 expression by RNAi increases Vpr-dependent apoptosis	PubMed
	vpr	Hsp70, a heat-shock protein contributing to cellular stress responses, inhibits nuclear translocation of HIV-1 Vpr; Hsp70 stimulates HIV-1 nuclear import and replication in macrophages in the absence of Vpr.	PubMed
	vpr	HIV-1 Vpr competes with Hsp70 for binding to karyopherin alpha	PubMed
matrix	gag	Hsp70 facilitates nuclear import of HIV-1 preintegration complexes by stimulating the binding of HIV-1 Matrix to karyopherin alpha	PubMed

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Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Markers

PMC138289P2 (e-PCR)
- UniSTS:270866

G30153 (e-PCR)
- UniSTS:17447

STS-M11717 (e-PCR)
- UniSTS:44847

PMC314357P1 (e-PCR)
- UniSTS:272944

RH35868 (e-PCR)
- UniSTS:32563

D6S1170E (e-PCR)
- UniSTS:27967

HSPA1A_124 (e-PCR)
- UniSTS:277330

PMC316709P1 (e-PCR)
- UniSTS:273039

PMC125271P2 (e-PCR)
- UniSTS:270488

PMC134733P1 (e-PCR)
- UniSTS:270749

PMC134733P2 (e-PCR)
- UniSTS:270750

PMC125702P4 (e-PCR)
- UniSTS:270510

PMC196894P1 (e-PCR)
- UniSTS:271822

GDB:204303 (e-PCR)
- UniSTS:156113

GDB:592864 (e-PCR)
- UniSTS:157927

PMC117401P1 (e-PCR)
- UniSTS:270334

Clone Names

FLJ54303, FLJ54370, FLJ54392, FLJ54408, FLJ75127

Gene Ontology Provided by GOA

Function	Evidence Code	Pubs
enables ATP binding	IDA Inferred from Direct Assay more info	PubMed
enables ATP binding	IEA Inferred from Electronic Annotation more info
enables ATP hydrolysis activity	IBA Inferred from Biological aspect of Ancestor more info
enables ATP hydrolysis activity	IDA Inferred from Direct Assay more info	PubMed
enables ATP hydrolysis activity	IEA Inferred from Electronic Annotation more info
enables ATP hydrolysis activity	TAS Traceable Author Statement more info
enables ATP-dependent protein disaggregase activity	IDA Inferred from Direct Assay more info	PubMed
enables ATP-dependent protein disaggregase activity	IEA Inferred from Electronic Annotation more info
enables ATP-dependent protein folding chaperone	IEA Inferred from Electronic Annotation more info
enables C3HC4-type RING finger domain binding	IEA Inferred from Electronic Annotation more info
enables C3HC4-type RING finger domain binding	IPI Inferred from Physical Interaction more info	PubMed
enables G protein-coupled receptor binding	IDA Inferred from Direct Assay more info	PubMed
enables G protein-coupled receptor binding	IEA Inferred from Electronic Annotation more info
enables RNA binding	HDA more info	PubMed
enables cadherin binding	HDA more info	PubMed
enables denatured protein binding	IPI Inferred from Physical Interaction more info	PubMed
enables disordered domain specific binding	IPI Inferred from Physical Interaction more info	PubMed
enables enzyme binding	IPI Inferred from Physical Interaction more info	PubMed
enables heat shock protein binding	IBA Inferred from Biological aspect of Ancestor more info
enables heat shock protein binding	IEA Inferred from Electronic Annotation more info
enables heat shock protein binding	IPI Inferred from Physical Interaction more info	PubMed
enables histone deacetylase binding	IEA Inferred from Electronic Annotation more info
enables histone deacetylase binding	IPI Inferred from Physical Interaction more info	PubMed
enables misfolded protein binding	IDA Inferred from Direct Assay more info	PubMed
enables nucleotide binding	IEA Inferred from Electronic Annotation more info
enables protein binding	IPI Inferred from Physical Interaction more info	PubMed
enables protein folding chaperone	IBA Inferred from Biological aspect of Ancestor more info
enables protein folding chaperone	IDA Inferred from Direct Assay more info	PubMed
enables protein folding chaperone	IEA Inferred from Electronic Annotation more info
enables receptor ligand activity	IDA Inferred from Direct Assay more info	PubMed
enables signaling receptor binding	IPI Inferred from Physical Interaction more info	PubMed
enables transcription corepressor activity	IDA Inferred from Direct Assay more info	PubMed
enables transcription regulator inhibitor activity	IDA Inferred from Direct Assay more info	PubMed
enables ubiquitin protein ligase binding	IEA Inferred from Electronic Annotation more info
enables ubiquitin protein ligase binding	IPI Inferred from Physical Interaction more info	PubMed
enables unfolded protein binding	IDA Inferred from Direct Assay more info	PubMed
enables unfolded protein binding	IEA Inferred from Electronic Annotation more info
enables unfolded protein binding	NAS Non-traceable Author Statement more info	PubMed
enables unfolded protein binding	TAS Traceable Author Statement more info	PubMed
enables virus receptor activity	IEA Inferred from Electronic Annotation more info

Process	Evidence Code	Pubs
involved_in ATP metabolic process	IDA Inferred from Direct Assay more info	PubMed
involved_in ATP metabolic process	IEA Inferred from Electronic Annotation more info
involved_in cellular heat acclimation	IEA Inferred from Electronic Annotation more info
involved_in cellular heat acclimation	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in cellular response to heat	IDA Inferred from Direct Assay more info	PubMed
involved_in cellular response to oxidative stress	IEA Inferred from Electronic Annotation more info
involved_in cellular response to oxidative stress	TAS Traceable Author Statement more info	PubMed
involved_in cellular response to steroid hormone stimulus	IEA Inferred from Electronic Annotation more info
involved_in cellular response to steroid hormone stimulus	TAS Traceable Author Statement more info
involved_in cellular response to unfolded protein	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in chaperone-mediated protein complex assembly	IDA Inferred from Direct Assay more info	PubMed
involved_in endoplasmic reticulum unfolded protein response	IDA Inferred from Direct Assay more info	PubMed
involved_in lysosomal transport	ISS Inferred from Sequence or Structural Similarity more info
involved_in mRNA catabolic process	IDA Inferred from Direct Assay more info	PubMed
involved_in mRNA catabolic process	IEA Inferred from Electronic Annotation more info
involved_in negative regulation of apoptotic process	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in negative regulation of apoptotic process	TAS Traceable Author Statement more info	PubMed
involved_in negative regulation of cell growth	IEA Inferred from Electronic Annotation more info
involved_in negative regulation of cell growth	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in negative regulation of cell population proliferation	IEA Inferred from Electronic Annotation more info
involved_in negative regulation of cell population proliferation	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in negative regulation of endoplasmic reticulum stress-induced intrinsic apoptotic signaling pathway	IDA Inferred from Direct Assay more info	PubMed
involved_in negative regulation of extrinsic apoptotic signaling pathway in absence of ligand	IEA Inferred from Electronic Annotation more info
involved_in negative regulation of extrinsic apoptotic signaling pathway in absence of ligand	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in negative regulation of inclusion body assembly	IDA Inferred from Direct Assay more info	PubMed
involved_in negative regulation of inclusion body assembly	IEA Inferred from Electronic Annotation more info
involved_in negative regulation of mitochondrial outer membrane permeabilization involved in apoptotic signaling pathway	IDA Inferred from Direct Assay more info	PubMed
involved_in negative regulation of protein ubiquitination	IDA Inferred from Direct Assay more info	PubMed
involved_in negative regulation of protein ubiquitination	IEA Inferred from Electronic Annotation more info
involved_in negative regulation of transcription by RNA polymerase II	IDA Inferred from Direct Assay more info	PubMed
involved_in negative regulation of transforming growth factor beta receptor signaling pathway	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in positive regulation of NF-kappaB transcription factor activity	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in positive regulation of RNA splicing	IDA Inferred from Direct Assay more info	PubMed
involved_in positive regulation of erythrocyte differentiation	IEA Inferred from Electronic Annotation more info
involved_in positive regulation of erythrocyte differentiation	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in positive regulation of gene expression	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in positive regulation of interleukin-8 production	IEA Inferred from Electronic Annotation more info
involved_in positive regulation of interleukin-8 production	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in positive regulation of microtubule nucleation	IEA Inferred from Electronic Annotation more info
involved_in positive regulation of microtubule nucleation	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in positive regulation of nucleotide-binding oligomerization domain containing 2 signaling pathway	IEA Inferred from Electronic Annotation more info
involved_in positive regulation of nucleotide-binding oligomerization domain containing 2 signaling pathway	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in positive regulation of proteasomal ubiquitin-dependent protein catabolic process	IBA Inferred from Biological aspect of Ancestor more info
involved_in positive regulation of proteasomal ubiquitin-dependent protein catabolic process	IDA Inferred from Direct Assay more info	PubMed
involved_in positive regulation of tumor necrosis factor-mediated signaling pathway	IEA Inferred from Electronic Annotation more info
involved_in positive regulation of tumor necrosis factor-mediated signaling pathway	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in protein refolding	IBA Inferred from Biological aspect of Ancestor more info
involved_in protein refolding	IDA Inferred from Direct Assay more info	PubMed
involved_in protein refolding	IEA Inferred from Electronic Annotation more info
involved_in protein refolding	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in protein stabilization	IDA Inferred from Direct Assay more info	PubMed
involved_in protein stabilization	IEA Inferred from Electronic Annotation more info
involved_in protein stabilization	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in protein stabilization	TAS Traceable Author Statement more info	PubMed
involved_in regulation of mitotic spindle assembly	IEA Inferred from Electronic Annotation more info
involved_in regulation of mitotic spindle assembly	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in regulation of protein ubiquitination	IDA Inferred from Direct Assay more info	PubMed
involved_in response to unfolded protein	IDA Inferred from Direct Assay more info
involved_in symbiont entry into host cell	IEA Inferred from Electronic Annotation more info

Component	Evidence Code	Pubs
part_of COP9 signalosome	IDA Inferred from Direct Assay more info	PubMed
located_in aggresome	IDA Inferred from Direct Assay more info	PubMed
located_in aggresome	IEA Inferred from Electronic Annotation more info
located_in blood microparticle	HDA more info	PubMed
located_in centriole	IDA Inferred from Direct Assay more info	PubMed
located_in centriole	IEA Inferred from Electronic Annotation more info
located_in centrosome	IDA Inferred from Direct Assay more info	PubMed
located_in centrosome	IEA Inferred from Electronic Annotation more info
is_active_in cytoplasm	IBA Inferred from Biological aspect of Ancestor more info
located_in cytoplasm	IDA Inferred from Direct Assay more info	PubMed
located_in cytoplasm	IEA Inferred from Electronic Annotation more info
located_in cytoplasm	TAS Traceable Author Statement more info	PubMed
is_active_in cytosol	IBA Inferred from Biological aspect of Ancestor more info
located_in cytosol	IDA Inferred from Direct Assay more info	PubMed
located_in cytosol	TAS Traceable Author Statement more info
located_in endoplasmic reticulum	TAS Traceable Author Statement more info	PubMed
located_in extracellular exosome	HDA more info	PubMed
located_in extracellular region	IEA Inferred from Electronic Annotation more info
located_in extracellular region	TAS Traceable Author Statement more info
is_active_in extracellular space	IDA Inferred from Direct Assay more info	PubMed
located_in ficolin-1-rich granule lumen	IEA Inferred from Electronic Annotation more info
located_in ficolin-1-rich granule lumen	TAS Traceable Author Statement more info
located_in focal adhesion	HDA more info	PubMed
located_in inclusion body	IDA Inferred from Direct Assay more info	PubMed
located_in mitochondrion	TAS Traceable Author Statement more info	PubMed
located_in nuclear speck	IDA Inferred from Direct Assay more info	PubMed
located_in nuclear speck	IEA Inferred from Electronic Annotation more info
located_in nucleoplasm	TAS Traceable Author Statement more info
is_active_in nucleus	IBA Inferred from Biological aspect of Ancestor more info
located_in nucleus	IDA Inferred from Direct Assay more info	PubMed
located_in nucleus	IEA Inferred from Electronic Annotation more info
located_in perinuclear region of cytoplasm	IDA Inferred from Direct Assay more info	PubMed
located_in perinuclear region of cytoplasm	IEA Inferred from Electronic Annotation more info
is_active_in plasma membrane	IBA Inferred from Biological aspect of Ancestor more info
part_of protein-containing complex	IDA Inferred from Direct Assay more info	PubMed
part_of ribonucleoprotein complex	IDA Inferred from Direct Assay more info	PubMed
part_of ribonucleoprotein complex	IEA Inferred from Electronic Annotation more info
located_in vesicle	HDA more info	PubMed

General protein information

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Preferred Names: heat shock 70 kDa protein 1A

Names: HSP70-1/HSP70-2; HSP70.1/HSP70.2; Heat shock 70 kDa protein 1B; Heat shock 70 kDa protein 2; dnaK-type molecular chaperone HSP70-1; epididymis secretory protein Li 103; epididymis secretory sperm binding protein; heat shock 70 kDa protein 1; heat shock 70 kDa protein 1/2; heat shock 70 kDa protein 1A/1B; heat shock 70kD protein 1A; heat shock 70kDa protein 1A; heat shock protein family A member 1A; heat shock-induced protein

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.