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Q8U0L6 (PSA_PYRFU) Reviewed, UniProtKB/Swiss-Prot

Last modified June 11, 2014. Version 78. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (2) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Proteasome subunit alpha

EC=3.4.25.1
Alternative name(s):
20S proteasome alpha subunit
Proteasome core protein PsmA
Gene names
Name:psmA
Ordered Locus Names:PF1571
OrganismPyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1) [Reference proteome] [HAMAP]
Taxonomic identifier186497 [NCBI]
Taxonomic lineageArchaeaEuryarchaeotaThermococciThermococcalesThermococcaceaePyrococcus

Protein attributes

Sequence length260 AA.
Sequence statusComplete.
Protein existenceInferred from homology

General annotation (Comments)

Function

Component of the proteasome core, a large protease complex with broad specificity involved in protein degradation By similarity. HAMAP-Rule MF_00289

Catalytic activity

Cleavage of peptide bonds with very broad specificity. HAMAP-Rule MF_00289

Enzyme regulation

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 By similarity. HAMAP-Rule MF_00289

Subunit structure

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 By similarity.

Subcellular location

Cytoplasm By similarity HAMAP-Rule MF_00289.

Sequence similarities

Belongs to the peptidase T1A family.

Ontologies

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 260260Proteasome subunit alpha HAMAP-Rule MF_00289
PRO_0000124183

Sequences

Sequence LengthMass (Da)Tools
Q8U0L6 [UniParc].

Last modified June 1, 2002. Version 1.
Checksum: 2CA52E105288FFA6

FASTA26029,009
        10         20         30         40         50         60 
MAFVPPQAGY DRAITVFSPD GRLFQVNYAR EAVKRGATAV GVKCGEGVVL AVEKRITSRL 

        70         80         90        100        110        120 
IEPDSYEKIF QIDDHIAAAS SGIIADARVL VNRARLEAQI YRLTYGEPAP VSVIVKKICD 

       130        140        150        160        170        180 
LKQMHTQYGG VRPFGAALLM AGINDRPELY ETDPSGAYFA WKAVAIGSGR NTAMAIFEEK 

       190        200        210        220        230        240 
YRDDMNLEDA IKLALMALAK TMENPSADNI EVAVITVKDK KFRKLTRDEI EKYLSEVLKE 

       250        260 
VEEEEVKEKE EDYSELDSNY 

« Hide

References

[1]"Divergence of the hyperthermophilic archaea Pyrococcus furiosus and P. horikoshii inferred from complete genomic sequences."
Maeder D.L., Weiss R.B., Dunn D.M., Cherry J.L., Gonzalez J.M., DiRuggiero J., Robb F.T.
Genetics 152:1299-1305(1999) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: ATCC 43587 / DSM 3638 / JCM 8422 / Vc1.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
AE009950 Genomic DNA. Translation: AAL81695.1.
RefSeqNP_579300.1. NC_003413.1.

3D structure databases

ProteinModelPortalQ8U0L6.
SMRQ8U0L6. Positions 6-237.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING186497.PF1571.

Protein family/group databases

MEROPST01.973.

Proteomic databases

PRIDEQ8U0L6.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaAAL81695; AAL81695; PF1571.
GeneID1469447.
KEGGpfu:PF1571.

Phylogenomic databases

eggNOGCOG0638.
HOGENOMHOG000091085.
KOK03432.
OMAFQVNYAR.

Family and domain databases

Gene3D3.60.20.10. 1 hit.
HAMAPMF_00289_A. Proteasome_A_A.
InterProIPR029055. Ntn_hydrolases_N.
IPR019982. Proteasome_asu_arc.
IPR000426. 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]
SUPFAMSSF56235. SSF56235. 1 hit.
TIGRFAMsTIGR03633. arc_protsome_A. 1 hit.
PROSITEPS00388. PROTEASOME_ALPHA_1. 1 hit.
PS51475. PROTEASOME_ALPHA_2. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry namePSA_PYRFU
AccessionPrimary (citable) accession number: Q8U0L6
Entry history
Integrated into UniProtKB/Swiss-Prot: October 10, 2002
Last sequence update: June 1, 2002
Last modified: June 11, 2014
This is version 78 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families

Peptidase families

Classification of peptidase families and list of entries