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Protein

Proteasome subunit alpha

Gene

psmA

Organism
Pyrococcus abyssi (strain GE5 / Orsay)
Status
Reviewed-Annotation score: -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

Keywordsi

Molecular functionHydrolase, Protease, Threonine protease

Enzyme and pathway databases

BioCyciPABY272844:G1GT8-658-MONOMER

Protein family/group databases

MEROPSiT01.973

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:PYRAB06070
ORF Names:PAB0417
OrganismiPyrococcus abyssi (strain GE5 / Orsay)
Taxonomic identifieri272844 [NCBI]
Taxonomic lineageiArchaeaEuryarchaeotaThermococciThermococcalesThermococcaceaePyrococcus
Proteomesi
  • UP000000810 Componenti: Chromosome
  • UP000009139 Componenti: Chromosome

Subcellular locationi

  • Cytoplasm UniRule annotation

GO - Cellular componenti

Keywords - Cellular componenti

Cytoplasm, Proteasome

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001241811 – 260Proteasome subunit alphaAdd BLAST260

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

STRINGi272844.PAB0417

Structurei

3D structure databases

ProteinModelPortaliQ9V122
SMRiQ9V122
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the peptidase T1A family.UniRule annotation

Phylogenomic databases

eggNOGiarCOG00971 Archaea
COG0638 LUCA
HOGENOMiHOG000091085
KOiK03432
OMAiFQVEYAR
OrthoDBiPOG093Z086S

Family and domain databases

CDDicd03756 proteasome_alpha_archeal, 1 hit
Gene3Di3.60.20.101 hit
HAMAPiMF_00289_A Proteasome_A_A, 1 hit
InterProiView protein in InterPro
IPR029055 Ntn_hydrolases_N
IPR023332 Proteasome_alpha-type
IPR019982 Proteasome_asu_arc
IPR000426 Proteasome_asu_N
IPR001353 Proteasome_sua/b
PfamiView protein in Pfam
PF00227 Proteasome, 1 hit
PF10584 Proteasome_A_N, 1 hit
SMARTiView protein in SMART
SM00948 Proteasome_A_N, 1 hit
SUPFAMiSSF56235 SSF56235, 1 hit
TIGRFAMsiTIGR03633 arc_protsome_A, 1 hit
PROSITEiView protein in PROSITE
PS00388 PROTEASOME_ALPHA_1, 1 hit
PS51475 PROTEASOME_ALPHA_2, 1 hit

Sequencei

Sequence statusi: Complete.

Q9V122-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MAFVPPQAGY DRAITVFSPD GRLFQVNYAR EAVKRGATAV GVKCKDGVVL
60 70 80 90 100
AVEKRITSRL IEPESYEKIF QIDDHIAAAS SGIIADARVL VNRARLEAQI
110 120 130 140 150
HRLTYGEPAP LAVIVKKICD LKQMHTQYGG VRPFGAALLM AGVNDKPELY
160 170 180 190 200
ETDPSGAYFA WKAVAIGSGR NTAMAIFEDK YRDDMTLDEA IKLAIFALAK
210 220 230 240 250
TMEKPSAENI EVAVITVKDK KFRKLSKEEI EKFLGEVMKE VEEEEVKEKE
260
EDYSELDSHY
Length:260
Mass (Da):28,994
Last modified:May 1, 2000 - v1
Checksum:i8551E62E245D37B4
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AJ248284 Genomic DNA Translation: CAB49529.1
HE613800 Genomic DNA Translation: CCE69999.1
PIRiB75181
RefSeqiWP_010867731.1, NC_000868.1

Genome annotation databases

EnsemblBacteriaiCAB49529; CAB49529; PAB0417
GeneIDi1495512
KEGGipab:PAB0417
PATRICifig|272844.11.peg.645

Similar proteinsi

Entry informationi

Entry nameiPSA_PYRAB
AccessioniPrimary (citable) accession number: Q9V122
Secondary accession number(s): G8ZJ72
Entry historyiIntegrated into UniProtKB/Swiss-Prot: December 8, 2000
Last sequence update: May 1, 2000
Last modified: March 28, 2018
This is version 121 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome