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Aliases for PSME1 Gene

Aliases for PSME1 Gene

  • Proteasome (Prosome, Macropain) Activator Subunit 1 (PA28 Alpha) 2 3
  • IFI5111 3 4 6
  • Activator Of Multicatalytic Protease Subunit 1 3 4
  • Interferon Gamma Up-Regulated I-5111 Protein 3 4
  • 11S Regulator Complex Subunit Alpha 3 4
  • IGUP I-5111 3 4
  • PA28alpha 3 4
  • PA28A 3 4
  • Interferon-Gamma-Inducible Protein 5111 3
  • Proteasome Activator Complex Subunit 1 3
  • Proteasome Activator 28 Subunit Alpha 4
  • Interferon-Gamma IEF SSP 5111 3
  • 29-KD MCP Activator Subunit 3
  • REG-Alpha 4
  • REGalpha 3

External Ids for PSME1 Gene

Previous GeneCards Identifiers for PSME1 Gene

  • GC14P021977
  • GC14P018392
  • GC14P022595
  • GC14P023675
  • GC14P023661
  • GC14P024605
  • GC14P004720

Summaries for PSME1 Gene

Entrez Gene Summary for PSME1 Gene

  • The 26S proteasome is a multicatalytic proteinase complex with a highly ordered structure composed of 2 complexes, a 20S core and a 19S regulator. The 20S core 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. The 19S regulator is composed of a base, which contains 6 ATPase subunits and 2 non-ATPase subunits, and a lid, which contains up to 10 non-ATPase 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. The immunoproteasome contains an alternate regulator, referred to as the 11S regulator or PA28, that replaces the 19S regulator. Three subunits (alpha, beta and gamma) of the 11S regulator have been identified. This gene encodes the alpha subunit of the 11S regulator, one of the two 11S subunits that is induced by gamma-interferon. Three alpha and three beta subunits combine to form a heterohexameric ring. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013]

GeneCards Summary for PSME1 Gene

PSME1 (Proteasome (Prosome, Macropain) Activator Subunit 1 (PA28 Alpha)) is a Protein Coding gene. Among its related pathways are Signaling by GPCR and Downstream Signaling Events Of B Cell Receptor (BCR). GO annotations related to this gene include endopeptidase activator activity. An important paralog of this gene is PSME3.

UniProtKB/Swiss-Prot for PSME1 Gene

  • Implicated in immunoproteasome assembly and required for efficient antigen processing. The PA28 activator complex enhances the generation of class I binding peptides by altering the cleavage pattern of the proteasome

Gene Wiki entry for PSME1 Gene

No data available for Tocris Summary , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for PSME1 Gene

Genomics for PSME1 Gene

Regulatory Elements for PSME1 Gene

Genomic Location for PSME1 Gene

24,136,158 bp from pter
24,138,967 bp from pter
2,810 bases
Plus strand

Genomic View for PSME1 Gene

UCSC Golden Path with GeneCards custom track
Cytogenetic band:
Genomic Location for PSME1 Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for PSME1 Gene

Proteins for PSME1 Gene

  • Protein details for PSME1 Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Recommended name:
    Proteasome activator complex subunit 1
    Protein Accession:
    Secondary Accessions:
    • A6NJG9
    • H0YNE3
    • Q6IBM2
    • Q9UEF4

    Protein attributes for PSME1 Gene

    249 amino acids
    Molecular mass:
    28723 Da
    Quaternary structure:
    • Heterodimer of PSME1 and PSME2, which forms a hexameric ring. PSME1 can form homoheptamers.

    Three dimensional structures from OCA and Proteopedia for PSME1 Gene

    Alternative splice isoforms for PSME1 Gene


neXtProt entry for PSME1 Gene

Proteomics data for PSME1 Gene at MOPED

Post-translational modifications for PSME1 Gene

  • Ubiquitination at Lys13, Lys24, Lys35, Lys176, and Lys245
  • Modification sites at PhosphoSitePlus

Other Protein References for PSME1 Gene

No data available for DME Specific Peptides for PSME1 Gene

Domains for PSME1 Gene

Gene Families for PSME1 Gene

  • PSM :Proteasome (prosome, macropain) subunits

Graphical View of Domain Structure for InterPro Entry



  • Q06323
  • Belongs to the PA28 family.
genes like me logo Genes that share domains with PSME1: view

Function for PSME1 Gene

Molecular function for PSME1 Gene

GENATLAS Biochemistry: multicatalytic proteinase complex (prosome,macropain,20S),proteasome activator PA28 alpha, homologous to Ki antigen,stimulated by interferon gamma
UniProtKB/Swiss-Prot Function: Implicated in immunoproteasome assembly and required for efficient antigen processing. The PA28 activator complex enhances the generation of class I binding peptides by altering the cleavage pattern of the proteasome
UniProtKB/Swiss-Prot Induction: By IFNG/IFN-gamma

Gene Ontology (GO) - Molecular Function for PSME1 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005515 protein binding --
GO:0061133 endopeptidase activator activity IEA --
genes like me logo Genes that share ontologies with PSME1: view

Phenotypes for PSME1 Gene

MGI mutant phenotypes for PSME1:
inferred from 1 alleles
genes like me logo Genes that share phenotypes with PSME1: view

Animal Models for PSME1 Gene

MGI Knock Outs for PSME1:

No data available for Enzyme Numbers (IUBMB) , Transcription Factor Targeting and HOMER Transcription for PSME1 Gene

Localization for PSME1 Gene

Subcellular locations from

Jensen Localization Image for PSME1 Gene COMPARTMENTS Subcellular localization image for PSME1 gene
Compartment Confidence
cytosol 4
nucleus 4

Gene Ontology (GO) - Cellular Components for PSME1 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0000502 proteasome complex TAS 8811196
GO:0005654 nucleoplasm TAS --
GO:0005737 cytoplasm TAS 16130169
GO:0005829 cytosol TAS --
GO:0008537 proteasome activator complex IEA --
genes like me logo Genes that share ontologies with PSME1: view

No data available for Subcellular locations from UniProtKB/Swiss-Prot for PSME1 Gene

Pathways for PSME1 Gene

SuperPathways for PSME1 Gene

Superpath Contained pathways
1 CDK-mediated phosphorylation and removal of Cdc6
2 Class I MHC mediated antigen processing and presentation
3 Cell Cycle, Mitotic
4 Mitotic Metaphase and Anaphase
5 Downstream Signaling Events Of B Cell Receptor (BCR)
genes like me logo Genes that share pathways with PSME1: view

Pathways by source for PSME1 Gene

1 Cell Signaling Technology pathway for PSME1 Gene
1 BioSystems pathway for PSME1 Gene
2 KEGG pathways for PSME1 Gene
1 GeneGo (Thomson Reuters) pathway for PSME1 Gene

Gene Ontology (GO) - Biological Process for PSME1 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0000082 G1/S transition of mitotic cell cycle TAS --
GO:0000209 protein polyubiquitination TAS --
GO:0000278 mitotic cell cycle TAS --
GO:0002223 stimulatory C-type lectin receptor signaling pathway TAS --
GO:0002474 antigen processing and presentation of peptide antigen via MHC class I TAS --
genes like me logo Genes that share ontologies with PSME1: view

Transcripts for PSME1 Gene

Unigene Clusters for PSME1 Gene

Proteasome (prosome, macropain) activator subunit 1 (PA28 alpha):
Representative Sequences:

Alternative Splicing Database (ASD) splice patterns (SP) for PSME1 Gene

ExUns: 1 ^ 2 ^ 3 ^ 4 ^ 5 ^ 6a · 6b ^ 7 ^ 8 ^ 9 ^ 10 ^ 11

Relevant External Links for PSME1 Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for PSME1 Gene

mRNA expression in normal human tissues for PSME1 Gene

mRNA expression in embryonic tissues and stem cells from LifeMap Discovery

mRNA differential expression in normal tissues according to GTEx for PSME1 Gene

This gene is overexpressed in Whole Blood (5.4).

Integrated Proteomics: protein expression from ProteomicsDB, PaxDb, MOPED, and MaxQB for PSME1 Gene

SOURCE GeneReport for Unigene cluster for PSME1 Gene Hs.75348

genes like me logo Genes that share expressions with PSME1: view

No data available for mRNA Expression by UniProt/SwissProt for PSME1 Gene

Orthologs for PSME1 Gene

This gene was present in the common ancestor of animals.

Orthologs for PSME1 Gene

Organism Taxonomy Gene Similarity Type Details
(Pan troglodytes)
Mammalia PSME1 35
  • 99.87 (n)
  • 100 (a)
PSME1 36
  • 98 (a)
(Bos Taurus)
Mammalia PSME1 35
  • 94.24 (n)
  • 96.79 (a)
PSME1 36
  • 87 (a)
(Canis familiaris)
Mammalia PSME1 35
  • 94.24 (n)
  • 98.8 (a)
PSME1 36
  • 95 (a)
(Mus musculus)
Mammalia Psme1 35
  • 89.96 (n)
  • 94.78 (a)
Psme1 16
Psme1 36
  • 85 (a)
(Monodelphis domestica)
Mammalia PSME1 36
  • 74 (a)
(Rattus norvegicus)
Mammalia Psme1 35
  • 89.83 (n)
  • 95.58 (a)
(Anolis carolinensis)
Reptilia PSME1 36
  • 54 (a)
African clawed frog
(Xenopus laevis)
Amphibia Xl.24011 35
tropical clawed frog
(Silurana tropicalis)
Amphibia psme1 35
  • 62.43 (n)
  • 57.38 (a)
Str.6276 35
(Danio rerio)
Actinopterygii psme1 35
  • 61.92 (n)
  • 56.5 (a)
psme1 36
  • 53 (a)
fruit fly
(Drosophila melanogaster)
Insecta REG 36
  • 32 (a)
(Caenorhabditis elegans)
Secernentea Y66D12A.9 36
  • 32 (a)
sea squirt
(Ciona savignyi)
Ascidiacea -- 36
  • 32 (a)
-- 36
  • 31 (a)
-- 36
  • 30 (a)
Species with no ortholog for PSME1:
  • A. gosspyii yeast (Ashbya gossypii)
  • Actinobacteria (Mycobacterium tuberculosis)
  • African malaria mosquito (Anopheles gambiae)
  • Alicante grape (Vitis vinifera)
  • alpha proteobacteria (Wolbachia pipientis)
  • amoeba (Dictyostelium discoideum)
  • Archea (Pyrococcus horikoshii)
  • baker's yeast (Saccharomyces cerevisiae)
  • barley (Hordeum vulgare)
  • beta proteobacteria (Neisseria meningitidis)
  • bread mold (Neurospora crassa)
  • chicken (Gallus gallus)
  • Chromalveolata (Phytophthora infestans)
  • common water flea (Daphnia pulex)
  • corn (Zea mays)
  • E. coli (Escherichia coli)
  • filamentous fungi (Aspergillus nidulans)
  • Firmicute bacteria (Streptococcus pneumoniae)
  • fission yeast (Schizosaccharomyces pombe)
  • green algae (Chlamydomonas reinhardtii)
  • honey bee (Apis mellifera)
  • K. lactis yeast (Kluyveromyces lactis)
  • loblloly pine (Pinus taeda)
  • malaria parasite (Plasmodium falciparum)
  • medicago trunc (Medicago Truncatula)
  • moss (Physcomitrella patens)
  • orangutan (Pongo pygmaeus)
  • pig (Sus scrofa)
  • platypus (Ornithorhynchus anatinus)
  • rainbow trout (Oncorhynchus mykiss)
  • rice (Oryza sativa)
  • rice blast fungus (Magnaporthe grisea)
  • schistosome parasite (Schistosoma mansoni)
  • sea anemone (Nematostella vectensis)
  • sea urchin (Strongylocentrotus purpuratus)
  • sorghum (Sorghum bicolor)
  • soybean (Glycine max)
  • stem rust fungus (Puccinia graminis)
  • sugarcane (Saccharum officinarum)
  • thale cress (Arabidopsis thaliana)
  • tomato (Lycopersicon esculentum)
  • toxoplasmosis (Toxoplasma gondii)
  • Trichoplax (Trichoplax adhaerens)
  • wheat (Triticum aestivum)

Evolution for PSME1 Gene

Gene Tree for PSME1 (if available)
Gene Tree for PSME1 (if available)

Paralogs for PSME1 Gene

Paralogs for PSME1 Gene

Selected SIMAP similar genes for PSME1 Gene using alignment to 5 proteins:

genes like me logo Genes that share paralogs with PSME1: view

Variants for PSME1 Gene

Sequence variations from dbSNP and Humsavar for PSME1 Gene

SNP ID Clin Chr 14 pos Sequence Context AA Info Type MAF
rs1803830 - 24,137,349(+) CTTGA(A/G)CAATC missense, reference
rs7147309 -- 24,137,243(+) AGGCC(A/G)AGAGA intron-variant
rs11158563 -- 24,135,192(+) AAAAA(A/C)ACCTG upstream-variant-2KB
rs11158566 -- 24,137,964(+) CACCC(A/C)GTGTG intron-variant
rs11432961 -- 24,136,247(+) CTAGG(-/C)CCCCC utr-variant-5-prime

Structural Variations from Database of Genomic Variants (DGV) for PSME1 Gene

Variant ID Type Subtype PubMed ID
nsv901498 CNV Loss 21882294

Relevant External Links for PSME1 Gene

HapMap Linkage Disequilibrium report

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot for PSME1 Gene

Disorders for PSME1 Gene

(1) Novoseek inferred disease relationships for PSME1 Gene

Disease -log(P) Hits PubMed IDs
tumors 0 1
genes like me logo Genes that share disorders with PSME1: view

No data available for UniProtKB/Swiss-Prot for PSME1 Gene

Publications for PSME1 Gene

  1. Interferon-gamma up-regulates a unique set of proteins in human keratinocytes. Molecular cloning and expression of the cDNA encoding the RGD-sequence-containing protein IGUP I-5111. (PMID: 8269930) Honore B. … Celis J.E. (Eur. J. Biochem. 1993) 2 3 4 23
  2. The proteasome 11S regulator subunit REG alpha (PA28 alpha) is a heptamer. (PMID: 9385652) Johnston S.C. … Hill C.P. (Protein Sci. 1997) 3 4 23
  3. Structure of the proteasome activator REGalpha (PA28alpha). (PMID: 9403698) Knowlton J.R. … Hill C.P. (Nature 1997) 3 4 23
  4. Pronounced up-regulation of the PA28alpha/beta proteasome regulator but little increase in the steady-state content of immunoproteasome during dendritic cell maturation. (PMID: 11745344) Macagno A. … Groettrup M. (Eur. J. Immunol. 2001) 3 23
  5. The RTP site shared by the HIV-1 Tat protein and the 11S regulator subunit alpha is crucial for their effects on proteasome function including antigen processing. (PMID: 12419264) Huang X. … Dubiel W. (J. Mol. Biol. 2002) 3 23

Products for PSME1 Gene

Sources for PSME1 Gene

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