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P25787 (PSA2_HUMAN) Reviewed, UniProtKB/Swiss-Prot

Last modified April 16, 2014. Version 153. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (6) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Interactions·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Proteasome subunit alpha type-2

EC=3.4.25.1
Alternative name(s):
Macropain subunit C3
Multicatalytic endopeptidase complex subunit C3
Proteasome component C3
Gene names
Name:PSMA2
Synonyms:HC3, PSC3
OrganismHomo sapiens (Human) [Reference proteome]
Taxonomic identifier9606 [NCBI]
Taxonomic lineageEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo

Protein attributes

Sequence length234 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceEvidence at protein level

General annotation (Comments)

Function

The proteasome is a multicatalytic proteinase complex which is characterized by its ability to cleave peptides with Arg, Phe, Tyr, Leu, and Glu adjacent to the leaving group at neutral or slightly basic pH. The proteasome has an ATP-dependent proteolytic activity. PSMA2 may have a potential regulatory effect on another component(s) of the proteasome complex through tyrosine phosphorylation.

Catalytic activity

Cleavage of peptide bonds with very broad specificity.

Subunit structure

The 26S proteasome consists of a 20S proteasome core and two 19S regulatory subunits. The 20S proteasome core is composed of 28 subunits that are arranged in four stacked rings, resulting in a barrel-shaped structure. The two end rings are each formed by seven alpha subunits, and the two central rings are each formed by seven beta subunits. The catalytic chamber with the active sites is on the inside of the barrel.

Subcellular location

Cytoplasm. Nucleus. CytoplasmP-body By similarity. Note: Colocalizes with TRIM5 in the cytoplasmic bodies By similarity.

Induction

Down-regulated by antioxidants BO-653 and probucol. Down-regulated in response to enterovirus 71 (EV71) infection (at protein level). Ref.9 Ref.11

Post-translational modification

Phosphorylated on tyrosine residues; which may be important for nuclear import By similarity.

Sequence similarities

Belongs to the peptidase T1A family.

Ontologies

Keywords
   Cellular componentCytoplasm
Nucleus
Proteasome
   Coding sequence diversityPolymorphism
   Molecular functionHydrolase
Protease
Threonine protease
   PTMAcetylation
Phosphoprotein
   Technical termComplete proteome
Direct protein sequencing
Reference proteome
Gene Ontology (GO)
   Biological_processDNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrest

Traceable author statement. Source: Reactome

G1/S transition of mitotic cell cycle

Traceable author statement. Source: Reactome

RNA metabolic process

Traceable author statement. Source: Reactome

anaphase-promoting complex-dependent proteasomal ubiquitin-dependent protein catabolic process

Traceable author statement. Source: Reactome

antigen processing and presentation of exogenous peptide antigen via MHC class I

Traceable author statement. Source: Reactome

antigen processing and presentation of exogenous peptide antigen via MHC class I, TAP-dependent

Traceable author statement. Source: Reactome

antigen processing and presentation of peptide antigen via MHC class I

Traceable author statement. Source: Reactome

apoptotic process

Traceable author statement. Source: Reactome

cellular nitrogen compound metabolic process

Traceable author statement. Source: Reactome

gene expression

Traceable author statement. Source: Reactome

mRNA metabolic process

Traceable author statement. Source: Reactome

mitotic cell cycle

Traceable author statement. Source: Reactome

negative regulation of apoptotic process

Traceable author statement. Source: Reactome

negative regulation of ubiquitin-protein ligase activity involved in mitotic cell cycle

Traceable author statement. Source: Reactome

positive regulation of ubiquitin-protein ligase activity involved in mitotic cell cycle

Traceable author statement. Source: Reactome

protein polyubiquitination

Traceable author statement. Source: Reactome

regulation of apoptotic process

Traceable author statement. Source: Reactome

regulation of cellular amino acid metabolic process

Traceable author statement. Source: Reactome

regulation of ubiquitin-protein ligase activity involved in mitotic cell cycle

Traceable author statement. Source: Reactome

response to virus

Inferred from expression pattern Ref.11. Source: UniProtKB

small molecule metabolic process

Traceable author statement. Source: Reactome

viral process

Traceable author statement. Source: Reactome

   Cellular_componentcytoplasmic mRNA processing body

Inferred from sequence or structural similarity. Source: UniProtKB

cytosol

Traceable author statement. Source: Reactome

extracellular vesicular exosome

Inferred from direct assay PubMed 19056867PubMed 20458337. Source: UniProt

nucleoplasm

Traceable author statement. Source: Reactome

proteasome complex

Traceable author statement PubMed 8811196. Source: ProtInc

proteasome core complex

Inferred from sequence or structural similarity. Source: UniProtKB

proteasome core complex, alpha-subunit complex

Inferred from electronic annotation. Source: InterPro

   Molecular_functionthreonine-type endopeptidase activity

Inferred from electronic annotation. Source: UniProtKB-KW

Complete GO annotation...

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Initiator methionine11Removed By similarity
Chain2 – 234233Proteasome subunit alpha type-2
PRO_0000124077

Amino acid modifications

Modified residue21N-acetylalanine By similarity
Modified residue701N6-acetyllysine Ref.13
Modified residue761Phosphotyrosine By similarity
Modified residue1711N6-acetyllysine Ref.13

Natural variations

Natural variant1101L → V in a colorectal cancer sample; somatic mutation. Ref.15
VAR_036278

Sequences

Sequence LengthMass (Da)Tools
P25787 [UniParc].

Last modified January 23, 2007. Version 2.
Checksum: 63CB56A233583836

FASTA23425,899
        10         20         30         40         50         60 
MAERGYSFSL TTFSPSGKLV QIEYALAAVA GGAPSVGIKA ANGVVLATEK KQKSILYDER 

        70         80         90        100        110        120 
SVHKVEPITK HIGLVYSGMG PDYRVLVHRA RKLAQQYYLV YQEPIPTAQL VQRVASVMQE 

       130        140        150        160        170        180 
YTQSGGVRPF GVSLLICGWN EGRPYLFQSD PSGAYFAWKA TAMGKNYVNG KTFLEKRYNE 

       190        200        210        220        230 
DLELEDAIHT AILTLKESFE GQMTEDNIEV GICNEAGFRR LTPTEVKDYL AAIA 

« Hide

References

« Hide 'large scale' references
[1]"Molecular cloning and sequence analysis of cDNAs for five major subunits of human proteasomes (multi-catalytic proteinase complexes)."
Tamura T., Lee D.H., Osaka F., Fujiwara T., Shin S., Chung C.H., Tanaka K., Ichihara A.
Biochim. Biophys. Acta 1089:95-102(1991) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA].
[2]"Complete sequencing and characterization of 21,243 full-length human cDNAs."
Ota T., Suzuki Y., Nishikawa T., Otsuki T., Sugiyama T., Irie R., Wakamatsu A., Hayashi K., Sato H., Nagai K., Kimura K., Makita H., Sekine M., Obayashi M., Nishi T., Shibahara T., Tanaka T., Ishii S. expand/collapse author list , Yamamoto J., Saito K., Kawai Y., Isono Y., Nakamura Y., Nagahari K., Murakami K., Yasuda T., Iwayanagi T., Wagatsuma M., Shiratori A., Sudo H., Hosoiri T., Kaku Y., Kodaira H., Kondo H., Sugawara M., Takahashi M., Kanda K., Yokoi T., Furuya T., Kikkawa E., Omura Y., Abe K., Kamihara K., Katsuta N., Sato K., Tanikawa M., Yamazaki M., Ninomiya K., Ishibashi T., Yamashita H., Murakawa K., Fujimori K., Tanai H., Kimata M., Watanabe M., Hiraoka S., Chiba Y., Ishida S., Ono Y., Takiguchi S., Watanabe S., Yosida M., Hotuta T., Kusano J., Kanehori K., Takahashi-Fujii A., Hara H., Tanase T.-O., Nomura Y., Togiya S., Komai F., Hara R., Takeuchi K., Arita M., Imose N., Musashino K., Yuuki H., Oshima A., Sasaki N., Aotsuka S., Yoshikawa Y., Matsunawa H., Ichihara T., Shiohata N., Sano S., Moriya S., Momiyama H., Satoh N., Takami S., Terashima Y., Suzuki O., Nakagawa S., Senoh A., Mizoguchi H., Goto Y., Shimizu F., Wakebe H., Hishigaki H., Watanabe T., Sugiyama A., Takemoto M., Kawakami B., Yamazaki M., Watanabe K., Kumagai A., Itakura S., Fukuzumi Y., Fujimori Y., Komiyama M., Tashiro H., Tanigami A., Fujiwara T., Ono T., Yamada K., Fujii Y., Ozaki K., Hirao M., Ohmori Y., Kawabata A., Hikiji T., Kobatake N., Inagaki H., Ikema Y., Okamoto S., Okitani R., Kawakami T., Noguchi S., Itoh T., Shigeta K., Senba T., Matsumura K., Nakajima Y., Mizuno T., Morinaga M., Sasaki M., Togashi T., Oyama M., Hata H., Watanabe M., Komatsu T., Mizushima-Sugano J., Satoh T., Shirai Y., Takahashi Y., Nakagawa K., Okumura K., Nagase T., Nomura N., Kikuchi H., Masuho Y., Yamashita R., Nakai K., Yada T., Nakamura Y., Ohara O., Isogai T., Sugano S.
Nat. Genet. 36:40-45(2004) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
[3]"Cloning of human full open reading frames in Gateway(TM) system entry vector (pDONR201)."
Ebert L., Schick M., Neubert P., Schatten R., Henze S., Korn B.
Submitted (MAY-2004) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
[4]"Human chromosome 7: DNA sequence and biology."
Scherer S.W., Cheung J., MacDonald J.R., Osborne L.R., Nakabayashi K., Herbrick J.-A., Carson A.R., Parker-Katiraee L., Skaug J., Khaja R., Zhang J., Hudek A.K., Li M., Haddad M., Duggan G.E., Fernandez B.A., Kanematsu E., Gentles S. expand/collapse author list , Christopoulos C.C., Choufani S., Kwasnicka D., Zheng X.H., Lai Z., Nusskern D.R., Zhang Q., Gu Z., Lu F., Zeesman S., Nowaczyk M.J., Teshima I., Chitayat D., Shuman C., Weksberg R., Zackai E.H., Grebe T.A., Cox S.R., Kirkpatrick S.J., Rahman N., Friedman J.M., Heng H.H.Q., Pelicci P.G., Lo-Coco F., Belloni E., Shaffer L.G., Pober B., Morton C.C., Gusella J.F., Bruns G.A.P., Korf B.R., Quade B.J., Ligon A.H., Ferguson H., Higgins A.W., Leach N.T., Herrick S.R., Lemyre E., Farra C.G., Kim H.-G., Summers A.M., Gripp K.W., Roberts W., Szatmari P., Winsor E.J.T., Grzeschik K.-H., Teebi A., Minassian B.A., Kere J., Armengol L., Pujana M.A., Estivill X., Wilson M.D., Koop B.F., Tosi S., Moore G.E., Boright A.P., Zlotorynski E., Kerem B., Kroisel P.M., Petek E., Oscier D.G., Mould S.J., Doehner H., Doehner K., Rommens J.M., Vincent J.B., Venter J.C., Li P.W., Mural R.J., Adams M.D., Tsui L.-C.
Science 300:767-772(2003) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
[5]Mural R.J., Istrail S., Sutton G.G., Florea L., Halpern A.L., Mobarry C.M., Lippert R., Walenz B., Shatkay H., Dew I., Miller J.R., Flanigan M.J., Edwards N.J., Bolanos R., Fasulo D., Halldorsson B.V., Hannenhalli S., Turner R. expand/collapse author list , Yooseph S., Lu F., Nusskern D.R., Shue B.C., Zheng X.H., Zhong F., Delcher A.L., Huson D.H., Kravitz S.A., Mouchard L., Reinert K., Remington K.A., Clark A.G., Waterman M.S., Eichler E.E., Adams M.D., Hunkapiller M.W., Myers E.W., Venter J.C.
Submitted (JUL-2005) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
[6]"The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)."
The MGC Project Team
Genome Res. 14:2121-2127(2004) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
Tissue: Lung and Uterus.
[7]Lubec G., Afjehi-Sadat L.
Submitted (MAR-2007) to UniProtKB
Cited for: PROTEIN SEQUENCE OF 5-39; 71-84; 93-113 AND 178-196, IDENTIFICATION BY MASS SPECTROMETRY.
Tissue: Brain and Cajal-Retzius cell.
[8]"Human proteasome subunits from 2-dimensional gels identified by partial sequencing."
Kristensen P., Johnsen A.H., Uerkvitz W., Tanaka K., Hendil K.B.
Biochem. Biophys. Res. Commun. 205:1785-1789(1994) [PubMed] [Europe PMC] [Abstract]
Cited for: PROTEIN SEQUENCE OF 5-14.
[9]"Gene expression induced by BO-653, probucol and BHQ in human endothelial cells."
Takabe W., Mataki C., Wada Y., Ishii M., Izumi A., Aburatani H., Hamakubo T., Niki E., Kodama T., Noguchi N.
J. Atheroscler. Thromb. 7:223-230(2000) [PubMed] [Europe PMC] [Abstract]
Cited for: INDUCTION BY BO-653 AND PROBUCOL.
[10]"Immunoaffinity profiling of tyrosine phosphorylation in cancer cells."
Rush J., Moritz A., Lee K.A., Guo A., Goss V.L., Spek E.J., Zhang H., Zha X.-M., Polakiewicz R.D., Comb M.J.
Nat. Biotechnol. 23:94-101(2005) [PubMed] [Europe PMC] [Abstract]
Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS].
[11]"Transcriptomic and proteomic analyses of rhabdomyosarcoma cells reveal differential cellular gene expression in response to enterovirus 71 infection."
Leong W.F., Chow V.T.
Cell. Microbiol. 8:565-580(2006) [PubMed] [Europe PMC] [Abstract]
Cited for: INDUCTION, IDENTIFICATION BY MASS SPECTROMETRY.
[12]"Mass spectrometric characterization of the affinity-purified human 26S proteasome complex."
Wang X., Chen C.-F., Baker P.R., Chen P.-L., Kaiser P., Huang L.
Biochemistry 46:3553-3565(2007) [PubMed] [Europe PMC] [Abstract]
Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS].
Tissue: Embryonic kidney.
[13]"Lysine acetylation targets protein complexes and co-regulates major cellular functions."
Choudhary C., Kumar C., Gnad F., Nielsen M.L., Rehman M., Walther T.C., Olsen J.V., Mann M.
Science 325:834-840(2009) [PubMed] [Europe PMC] [Abstract]
Cited for: ACETYLATION [LARGE SCALE ANALYSIS] AT LYS-70 AND LYS-171, IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS].
[14]"Initial characterization of the human central proteome."
Burkard T.R., Planyavsky M., Kaupe I., Breitwieser F.P., Buerckstuemmer T., Bennett K.L., Superti-Furga G., Colinge J.
BMC Syst. Biol. 5:17-17(2011) [PubMed] [Europe PMC] [Abstract]
Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS].
[15]"The consensus coding sequences of human breast and colorectal cancers."
Sjoeblom T., Jones S., Wood L.D., Parsons D.W., Lin J., Barber T.D., Mandelker D., Leary R.J., Ptak J., Silliman N., Szabo S., Buckhaults P., Farrell C., Meeh P., Markowitz S.D., Willis J., Dawson D., Willson J.K.V. expand/collapse author list , Gazdar A.F., Hartigan J., Wu L., Liu C., Parmigiani G., Park B.H., Bachman K.E., Papadopoulos N., Vogelstein B., Kinzler K.W., Velculescu V.E.
Science 314:268-274(2006) [PubMed] [Europe PMC] [Abstract]
Cited for: VARIANT [LARGE SCALE ANALYSIS] VAL-110.
+Additional computationally mapped references.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
D00760 mRNA. Translation: BAA00657.1.
AK290654 mRNA. Translation: BAF83343.1.
CR450317 mRNA. Translation: CAG29313.1.
CH236951 Genomic DNA. Translation: EAL24005.1.
CH471073 Genomic DNA. Translation: EAW94152.1.
BC002900 mRNA. Translation: AAH02900.2.
BC047697 mRNA. Translation: AAH47697.1.
PIRSNHUC3. S15970.
RefSeqNP_002778.1. NM_002787.4.
UniGeneHs.333786.

3D structure databases

ProteinModelPortalP25787.
SMRP25787. Positions 2-234.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

BioGrid111656. 108 interactions.
IntActP25787. 24 interactions.
MINTMINT-1178435.
STRING9606.ENSP00000223321.

Chemistry

ChEMBLCHEMBL2364701.

Protein family/group databases

MEROPST01.972.

PTM databases

PhosphoSiteP25787.

Polymorphism databases

DMDM130850.

2D gel databases

OGPP25787.
REPRODUCTION-2DPAGEIPI00219622.

Proteomic databases

PaxDbP25787.
PeptideAtlasP25787.
PRIDEP25787.

Protocols and materials databases

DNASU5683.
StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblENST00000223321; ENSP00000223321; ENSG00000106588.
GeneID5683.
KEGGhsa:5683.
UCSCuc003thy.3. human.

Organism-specific databases

CTD5683.
GeneCardsGC07M042956.
HGNCHGNC:9531. PSMA2.
HPAHPA008188.
MIM176842. gene.
neXtProtNX_P25787.
PharmGKBPA33876.
GenAtlasSearch...

Phylogenomic databases

eggNOGCOG0638.
HOGENOMHOG000091085.
HOVERGENHBG003005.
InParanoidP25787.
KOK02726.
OMAWKATALG.
OrthoDBEOG71VSTG.
PhylomeDBP25787.
TreeFamTF106207.

Enzyme and pathway databases

ReactomeREACT_111102. Signal Transduction.
REACT_111217. Metabolism.
REACT_115566. Cell Cycle.
REACT_116125. Disease.
REACT_13505. Proteasome mediated degradation of PAK-2p34.
REACT_21257. Metabolism of RNA.
REACT_21300. Mitotic M-M/G1 phases.
REACT_383. DNA Replication.
REACT_578. Apoptosis.
REACT_6850. Cdc20:Phospho-APC/C mediated degradation of Cyclin A.
REACT_6900. Immune System.
REACT_71. Gene Expression.

Gene expression databases

ArrayExpressP25787.
BgeeP25787.
CleanExHS_PSMA2.
GenevestigatorP25787.

Family and domain databases

InterProIPR000426. Proteasome_asu_N.
IPR023332. Proteasome_suA-type.
IPR001353. Proteasome_sua/b.
[Graphical view]
PfamPF00227. Proteasome. 1 hit.
PF10584. Proteasome_A_N. 1 hit.
[Graphical view]
SMARTSM00948. Proteasome_A_N. 1 hit.
[Graphical view]
PROSITEPS00388. PROTEASOME_ALPHA_1. 1 hit.
PS51475. PROTEASOME_ALPHA_2. 1 hit.
[Graphical view]
ProtoNetSearch...

Other

GeneWikiPSMA2.
GenomeRNAi5683.
NextBio22068.
PROP25787.
SOURCESearch...

Entry information

Entry namePSA2_HUMAN
AccessionPrimary (citable) accession number: P25787
Secondary accession number(s): Q6ICS6, Q9BU45
Entry history
Integrated into UniProtKB/Swiss-Prot: May 1, 1992
Last sequence update: January 23, 2007
Last modified: April 16, 2014
This is version 153 of the entry and version 2 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

Relevant documents

SIMILARITY comments

Index of protein domains and families

Peptidase families

Classification of peptidase families and list of entries

MIM cross-references

Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot

Human polymorphisms and disease mutations

Index of human polymorphisms and disease mutations

Human entries with polymorphisms or disease mutations

List of human entries with polymorphisms or disease mutations

Human chromosome 7

Human chromosome 7: entries, gene names and cross-references to MIM