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Protein

Proteasome subunit alpha

Gene

psmA

Organism
Thermoplasma volcanium (strain ATCC 51530 / DSM 4299 / JCM 9571 / NBRC 15438 / GSS1)
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

Protein family/group databases

MEROPSiT01.972.

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:TV0307
ORF Names:TVG0317752
OrganismiThermoplasma volcanium (strain ATCC 51530 / DSM 4299 / JCM 9571 / NBRC 15438 / GSS1)
Taxonomic identifieri273116 [NCBI]
Taxonomic lineageiArchaeaEuryarchaeotaThermoplasmataThermoplasmatalesThermoplasmataceaeThermoplasma
ProteomesiUP000001017 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 – 233233Proteasome subunit alphaPRO_0000124191Add
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

STRINGi273116.TVN0304.

Structurei

3D structure databases

ProteinModelPortaliQ97BZ8.
SMRiQ97BZ8. Positions 7-233.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the peptidase T1A family.UniRule annotation

Phylogenomic databases

eggNOGiCOG0638.
KOiK03432.
OMAiEKNYKYD.

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.

Q97BZ8-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MQQGQMAYDR AITVFSPDGR LFQVEYAREA VKKGSTALGL KFSNGVLLIS
60 70 80 90 100
DKKIRSKLIE QNSLEKIQLI DDYVAAVTSG LVADARVLID FARISAQQEK
110 120 130 140 150
VTYGSLVNIE NLVKRVADQM QQYTQYGGVR PYGVSLIFAG IDQIGPRLFD
160 170 180 190 200
CDPAGTINEY KATAIGSGKD AVVSFLEKEY KEGLSEKEAV TLGIKALKAS
210 220 230
LEEGEELKAP EIASITVGSK YRIYGAEEVK KFL
Length:233
Mass (Da):25,544
Last modified:May 10, 2002 - v2
Checksum:i7CC3948B8BDEAA01
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BA000011 Genomic DNA. Translation: BAB59449.1.
RefSeqiNP_110823.1. NC_002689.2.
WP_010916562.1. NC_002689.2.

Genome annotation databases

EnsemblBacteriaiBAB59449; BAB59449; BAB59449.
GeneIDi1440820.
KEGGitvo:TVN0304.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BA000011 Genomic DNA. Translation: BAB59449.1.
RefSeqiNP_110823.1. NC_002689.2.
WP_010916562.1. NC_002689.2.

3D structure databases

ProteinModelPortaliQ97BZ8.
SMRiQ97BZ8. Positions 7-233.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi273116.TVN0304.

Protein family/group databases

MEROPSiT01.972.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiBAB59449; BAB59449; BAB59449.
GeneIDi1440820.
KEGGitvo:TVN0304.

Phylogenomic databases

eggNOGiCOG0638.
KOiK03432.
OMAiEKNYKYD.

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. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: ATCC 51530 / DSM 4299 / JCM 9571 / NBRC 15438 / GSS1.

Entry informationi

Entry nameiPSA_THEVO
AccessioniPrimary (citable) accession number: Q97BZ8
Entry historyi
Integrated into UniProtKB/Swiss-Prot: May 10, 2002
Last sequence update: May 10, 2002
Last modified: June 24, 2015
This is version 94 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete 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.