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Q9S375 (PSA_MYCLE) Reviewed, UniProtKB/Swiss-Prot

Last modified June 11, 2014. Version 84. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (3) | 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 PrcA
Gene names
Name:prcA
Ordered Locus Names:ML1323
ORF Names:B2126_C3_260
OrganismMycobacterium leprae (strain TN) [Complete proteome] [HAMAP]
Taxonomic identifier272631 [NCBI]
Taxonomic lineageBacteriaActinobacteriaActinobacteridaeActinomycetalesCorynebacterineaeMycobacteriaceaeMycobacterium

Protein attributes

Sequence length265 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 ARC-20S proteasome complex, likely via the docking of the C-termini of ARC into the intersubunit pockets in the alpha-rings, may trigger 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

Pathway

Protein degradation; proteasomal Pup-dependent pathway. 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 by the proteasome-associated ATPase, ARC 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 – 265265Proteasome subunit alpha HAMAP-Rule MF_00289
PRO_0000397151

Experimental info

Sequence conflict16 – 172RS → QR in AAA17205. Ref.1

Sequences

Sequence LengthMass (Da)Tools
Q9S375 [UniParc].

Last modified May 1, 2000. Version 1.
Checksum: C53A39054284FF9E

FASTA26528,677
        10         20         30         40         50         60 
MSFPYFISPE QAMRERSELA RKGIARGRSV VALAYAGGVL FVAENPSRSL QKISELYDRV 

        70         80         90        100        110        120 
GFAAAGKFNE FDNLRRGGIQ FADTRGYAYD RRDVTGRQLA NVYAQTLGTI FTEQAKPYEV 

       130        140        150        160        170        180 
ELCVAEVAHY GETKPPELYR ITYDGSINDE PHFMVMGGTT ESIANALKES YAENASLTDA 

       190        200        210        220        230        240 
LGIAVAALRA GSADAAGSDQ PTLGVASLEV AVLDANRPRR AFRRIIGSGL EALLREKDSK 

       250        260 
GSKGAQNPKG ARDSKNSKSY GESTD 

« Hide

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
U00017 Genomic DNA. Translation: AAA17205.1.
AL035310 Genomic DNA. Translation: CAA22934.1.
AL583921 Genomic DNA. Translation: CAC31704.1.
PIRE87074.
S72865.
RefSeqNP_301951.1. NC_002677.1.

3D structure databases

ProteinModelPortalQ9S375.
SMRQ9S375. Positions 8-237.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING272631.ML1323.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaCAC31704; CAC31704; CAC31704.
GeneID910449.
KEGGmle:ML1323.
PATRIC18055004. VBIMycLep78757_2440.

Organism-specific databases

LepromaML1323.
CMRSearch...

Phylogenomic databases

eggNOGCOG0638.
HOGENOMHOG000245319.
KOK03432.
OMAGRYNEFE.
OrthoDBEOG6NKQZG.

Enzyme and pathway databases

UniPathwayUPA00997.

Family and domain databases

Gene3D3.60.20.10. 1 hit.
HAMAPMF_00289_B. Proteasome_A_B.
InterProIPR029055. Ntn_hydrolases_N.
IPR022296. Proteasome_asu_bac.
IPR023332. Proteasome_suA-type.
IPR001353. Proteasome_sua/b.
[Graphical view]
PfamPF00227. Proteasome. 1 hit.
[Graphical view]
SUPFAMSSF56235. SSF56235. 1 hit.
TIGRFAMsTIGR03691. 20S_bact_alpha. 1 hit.
PROSITEPS51475. PROTEASOME_ALPHA_2. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry namePSA_MYCLE
AccessionPrimary (citable) accession number: Q9S375
Secondary accession number(s): Q49792
Entry history
Integrated into UniProtKB/Swiss-Prot: August 10, 2010
Last sequence update: May 1, 2000
Last modified: June 11, 2014
This is version 84 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

PATHWAY comments

Index of metabolic and biosynthesis pathways