PSMA2 proteasome 20S subunit alpha 2 [Homo sapiens (human)] - Gene

Summary

Official Symbol: PSMA2provided by HGNC
Official Full Name: proteasome 20S subunit alpha 2provided by HGNC
Primary source: HGNC:HGNC:9531
See related: Ensembl:ENSG00000106588 MIM:176842; AllianceGenome:HGNC:9531
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: MU; HC3; PSC2; PMSA2
Summary: The proteasome is a multicatalytic proteinase complex with a highly ordered ring-shaped 20S core structure. The core structure is composed of 4 rings of 28 non-identical subunits; 2 rings are composed of 7 alpha subunits and 2 rings are composed of 7 beta subunits. Proteasomes are distributed throughout eukaryotic cells at a high concentration and cleave peptides in an ATP/ubiquitin-dependent process in a non-lysosomal pathway. An essential function of a modified proteasome, the immunoproteasome, is the processing of class I MHC peptides. This gene encodes a member of the peptidase T1A family, that is a 20S core alpha subunit. [provided by RefSeq, Jul 2008]
Expression: Ubiquitous expression in liver (RPKM 64.0), fat (RPKM 48.4) and 25 other tissues See more
Orthologs: mouse all
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Genomic context

Location:: 7p14.1

Exon count:: 8

Annotation release	Status	Assembly	Chr	Location
RS_2024_08	current	GRCh38.p14 (GCF_000001405.40)	7	NC_000007.14 (42916861..42932174, complement)
RS_2024_08	current	T2T-CHM13v2.0 (GCF_009914755.1)	7	NC_060931.1 (43075002..43090304, complement)
RS_2024_09	previous assembly	GRCh37.p13 (GCF_000001405.25)	7	NC_000007.13 (42956460..42971773, complement)

Chromosome 7 - NC_000007.14 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

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

PSMA2 promotes glioma proliferation and migration via EMT.
Title: PSMA2 promotes glioma proliferation and migration via EMT.
HLA-A, HSPA5, IGFBP5 and PSMA2 Are Restriction Factors for Zika Virus Growth in Astrocytic Cells.
Title: HLA-A, HSPA5, IGFBP5 and PSMA2 Are Restriction Factors for Zika Virus Growth in Astrocytic Cells.
Influenza A Virus Uses PSMA2 for Downregulation of the NRF2-Mediated Oxidative Stress Response.
Title: Influenza A Virus Uses PSMA2 for Downregulation of the NRF2-Mediated Oxidative Stress Response.
The expression level of psma6 in AML-M5 patients with complete remission was higher than that in AML-M5 patients without remission.
Title: [Expression of genes psma6 and slc25a4 in patients with acute monocytic leukemia].

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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 proteasome (prosome, macropain) subunit, alpha type, 2 (PSMA2) by siRNA inhibits the early stages of HIV-1 replication in 293T cells infected with VSV-G pseudotyped HIV-1	PubMed

Protein interactions

Protein	Gene	Interaction	Pubs
Tat	tat	HIV-1 Tat slightly enhances the activity of the purified 26 S proteasome	PubMed
	tat	Amino acids Lys51, Arg52, and Asp67 of HIV-1 Tat represent the proteasome binding site of Tat, and Tat amino acids 37-72 are necessary for proteasomal interaction and suppression of 11 S regulator-mediated antigen presentation	PubMed
	tat	HIV-1 Tat inhibits the peptidase activity of the 20 S proteasome and interferes with the formation of the 20 S proteasome-11 S regulator complex	PubMed
	tat	HIV-1 Tat binds to the alpha2, alpha4, alpha6, alpha7, beta1, beta2, beta3, beta5, beta6, beta7, LMP7/beta5i, and MECL1/beta2i subunits of the proteasome 20 S core structure and can inhibit cellular proteasome function	PubMed
Vif	vif	HIV-1 Vif binds to the cellular cytidine deaminase APOBEC3G and targets it for degradation through an interaction with the proteasome, thereby inhibiting APOBEC3G mediated restriction of HIV-1 replication	PubMed
integrase	gag-pol	Proteasomal degradation of HIV-1 integrase in mammalian cells occurs by the N-end rule pathway	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

RH36520 (e-PCR)
- UniSTS:63263

D8S2279 (e-PCR)
- UniSTS:473907

RH36115 (e-PCR)
- UniSTS:83051

D11S3114 (e-PCR)
- UniSTS:152207

RH17359 (e-PCR)
- UniSTS:12476

Gene Ontology Provided by GOA

Function	Evidence Code	Pubs
enables protein binding	IPI Inferred from Physical Interaction more info	PubMed

Process	Evidence Code	Pubs
involved_in proteasome-mediated ubiquitin-dependent protein catabolic process	IBA Inferred from Biological aspect of Ancestor more info
involved_in proteasome-mediated ubiquitin-dependent protein catabolic process	ISS Inferred from Sequence or Structural Similarity more info
involved_in proteasome-mediated ubiquitin-dependent protein catabolic process	NAS Non-traceable Author Statement more info	PubMed
involved_in response to virus	IEP Inferred from Expression Pattern more info	PubMed

Component	Evidence Code	Pubs
located_in P-body	ISS Inferred from Sequence or Structural Similarity more info
is_active_in cytoplasm	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 extracellular region	TAS Traceable Author Statement more info
located_in ficolin-1-rich granule lumen	TAS Traceable Author Statement more info
located_in nucleoplasm	TAS Traceable Author Statement more info
located_in nucleus	HDA more info	PubMed
is_active_in nucleus	IDA Inferred from Direct Assay more info	PubMed
part_of proteasome complex	IDA Inferred from Direct Assay more info	PubMed
part_of proteasome complex	NAS Non-traceable Author Statement more info	PubMed
part_of proteasome core complex	IDA Inferred from Direct Assay more info	PubMed
part_of proteasome core complex	ISS Inferred from Sequence or Structural Similarity more info
part_of proteasome core complex, alpha-subunit complex	IBA Inferred from Biological aspect of Ancestor more info
part_of proteasome core complex, alpha-subunit complex	ISS Inferred from Sequence or Structural Similarity more info
located_in secretory granule lumen	TAS Traceable Author Statement more info

General protein information

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Preferred Names: proteasome subunit alpha type-2

Names: alpha-2; macropain subunit C3; multicatalytic endopeptidase complex subunit C3; proteasome (prosome, macropain) subunit, alpha type, 2; proteasome component C3; proteasome subunit HC3; proteasome subunit alpha 2

NP_002778.1

EC 3.4.25.1

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.

mRNA and Protein(s)

NM_002787.5 → NP_002778.1 proteasome subunit alpha type-2

See identical proteins and their annotated locations for NP_002778.1

Status: REVIEWED

Source sequence(s)

AC010132

Consensus CDS

CCDS5467.1

UniProtKB/Swiss-Prot

P25787, Q6ICS6, Q9BU45

UniProtKB/TrEMBL

A0A024RA52, Q53GF5

Related

ENSP00000223321.4, ENST00000223321.9

Conserved Domains (1) summary

cd03750
Location:6 → 231

proteasome_alpha_type_2; The 20S proteasome, multisubunit proteolytic complex, is the central enzyme of nonlysosomal protein degradation in both the cytosol and nucleus. It is composed of 28 subunits arranged as four homoheptameric rings that stack on top of one another forming ...