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Protein

Proteasome subunit alpha

Gene

psmA

Organism
Methanosphaerula palustris (strain ATCC BAA-1556 / DSM 19958 / E1-9c)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

Component of the proteasome core, a large protease complex with broad specificity involved in protein degradation.UniRule annotation

Catalytic activityi

Cleavage of peptide bonds with very broad specificity.UniRule annotation

Enzyme regulationi

The formation of the proteasomal ATPase PAN-20S proteasome complex, via the docking of the C-termini of PAN into the intersubunit pockets in the alpha-rings, triggers opening of the gate for substrate entry. Interconversion between the open-gate and close-gate conformations leads to a dynamic regulation of the 20S proteasome proteolysis activity.UniRule annotation

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Hydrolase, Protease, Threonine protease

Enzyme and pathway databases

BioCyciMPAL521011:GI2F-2587-MONOMER.

Protein family/group databases

MEROPSiT01.995.

Names & Taxonomyi

Protein namesi
Recommended name:
Proteasome subunit alphaUniRule annotation (EC:3.4.25.1UniRule annotation)
Alternative name(s):
20S proteasome alpha subunitUniRule annotation
Proteasome core protein PsmAUniRule annotation
Gene namesi
Name:psmAUniRule annotation
Ordered Locus Names:Mpal_2526
OrganismiMethanosphaerula palustris (strain ATCC BAA-1556 / DSM 19958 / E1-9c)
Taxonomic identifieri521011 [NCBI]
Taxonomic lineageiArchaeaEuryarchaeotaMethanomicrobiaMethanomicrobialesMethanoregulaceaeMethanosphaerula
ProteomesiUP000002457 Componenti: Chromosome

Subcellular locationi

  • Cytoplasm UniRule annotation

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm, Proteasome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 241241Proteasome subunit alphaPRO_1000192661Add
BLAST

Interactioni

Subunit structurei

The 20S proteasome core is composed of 14 alpha and 14 beta subunits that assemble into four stacked heptameric rings, resulting in a barrel-shaped structure. The two inner rings, each composed of seven catalytic beta subunits, are sandwiched by two outer rings, each composed of seven alpha subunits. The catalytic chamber with the active sites is on the inside of the barrel. Has a gated structure, the ends of the cylinder being occluded by the N-termini of the alpha-subunits. Is capped at one or both ends by the proteasome regulatory ATPase, PAN.UniRule annotation

Protein-protein interaction databases

STRINGi521011.Mpal_2526.

Family & Domainsi

Sequence similaritiesi

Belongs to the peptidase T1A family.UniRule annotation

Phylogenomic databases

eggNOGiCOG0638.
HOGENOMiHOG000091085.
KOiK03432.
OMAiSGAYFEW.

Family and domain databases

Gene3Di3.60.20.10. 1 hit.
HAMAPiMF_00289_A. Proteasome_A_A.
InterProiIPR029055. Ntn_hydrolases_N.
IPR019982. Proteasome_asu_arc.
IPR000426. Proteasome_asu_N.
IPR023332. Proteasome_suA-type.
IPR001353. Proteasome_sua/b.
[Graphical view]
PfamiPF00227. Proteasome. 1 hit.
PF10584. Proteasome_A_N. 1 hit.
[Graphical view]
SMARTiSM00948. Proteasome_A_N. 1 hit.
[Graphical view]
SUPFAMiSSF56235. SSF56235. 1 hit.
TIGRFAMsiTIGR03633. arc_protsome_A. 1 hit.
PROSITEiPS00388. PROTEASOME_ALPHA_1. 1 hit.
PS51475. PROTEASOME_ALPHA_2. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

B8GEZ3-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MQPQYQMGYD RAITVFSPDG RLYQVEYARE AVKRGTTAVG IKCNDGIVLL
60 70 80 90 100
VDKRVNSKLL EPSSIEKIFK IDNHIGVASS GLVGDARSLV DRARVESQVN
110 120 130 140 150
RVSYDEQIDV EMLSKKLCDH MQTYTQFGGA RPYGTALLIA GISDGQFRLF
160 170 180 190 200
ETDPSGTLLE YKATGIGIGR NAVMKVFEEE YNPEASIRDA ILLGLKALHA
210 220 230 240
ATEGKFDVNT VEIGVVNNDT PAFRKMSRQE VASFVEQIEQ S
Length:241
Mass (Da):26,646
Last modified:March 3, 2009 - v1
Checksum:iFFD19C6CC8E8091B
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP001338 Genomic DNA. Translation: ACL17799.1.
RefSeqiWP_012619118.1. NC_011832.1.
YP_002467522.1. NC_011832.1.

Genome annotation databases

EnsemblBacteriaiACL17799; ACL17799; Mpal_2526.
GeneIDi7271695.
KEGGimpl:Mpal_2526.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP001338 Genomic DNA. Translation: ACL17799.1.
RefSeqiWP_012619118.1. NC_011832.1.
YP_002467522.1. NC_011832.1.

3D structure databases

ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi521011.Mpal_2526.

Protein family/group databases

MEROPSiT01.995.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiACL17799; ACL17799; Mpal_2526.
GeneIDi7271695.
KEGGimpl:Mpal_2526.

Phylogenomic databases

eggNOGiCOG0638.
HOGENOMiHOG000091085.
KOiK03432.
OMAiSGAYFEW.

Enzyme and pathway databases

BioCyciMPAL521011:GI2F-2587-MONOMER.

Family and domain databases

Gene3Di3.60.20.10. 1 hit.
HAMAPiMF_00289_A. Proteasome_A_A.
InterProiIPR029055. Ntn_hydrolases_N.
IPR019982. Proteasome_asu_arc.
IPR000426. Proteasome_asu_N.
IPR023332. Proteasome_suA-type.
IPR001353. Proteasome_sua/b.
[Graphical view]
PfamiPF00227. Proteasome. 1 hit.
PF10584. Proteasome_A_N. 1 hit.
[Graphical view]
SMARTiSM00948. Proteasome_A_N. 1 hit.
[Graphical view]
SUPFAMiSSF56235. SSF56235. 1 hit.
TIGRFAMsiTIGR03633. arc_protsome_A. 1 hit.
PROSITEiPS00388. PROTEASOME_ALPHA_1. 1 hit.
PS51475. PROTEASOME_ALPHA_2. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. "Complete sequence of Candidatus Methanosphaerula E1-9c."
    US DOE Joint Genome Institute
    Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H., Bruce D., Goodwin L., Pitluck S., Kiss H., Lu M., Brettin T., Detter J.C., Han C., Larimer F., Land M., Hauser L., Kyrpides N., Ovchinnikova G.O., Zinder S.
    Submitted (DEC-2008) to the EMBL/GenBank/DDBJ databases
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: ATCC BAA-1556 / DSM 19958 / E1-9c.

Entry informationi

Entry nameiPSA_METPE
AccessioniPrimary (citable) accession number: B8GEZ3
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 28, 2009
Last sequence update: March 3, 2009
Last modified: May 27, 2015
This is version 48 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. Peptidase families
    Classification of peptidase families and list of entries
  2. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.