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D1BS26 (PSB_XYLCX) Reviewed, UniProtKB/Swiss-Prot

Last modified June 11, 2014. Version 30. 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 beta

EC=3.4.25.1
Alternative name(s):
20S proteasome beta subunit
Proteasome core protein PrcB
Gene names
Name:prcB
Ordered Locus Names:Xcel_1488
OrganismXylanimonas cellulosilytica (strain DSM 15894 / CECT 5975 / LMG 20990 / XIL07) [Complete proteome] [HAMAP]
Taxonomic identifier446471 [NCBI]
Taxonomic lineageBacteriaActinobacteriaActinobacteridaeActinomycetalesMicrococcineaePromicromonosporaceaeXylanimonas

Protein attributes

Sequence length270 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
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_02113

Catalytic activity

Cleavage of peptide bonds with very broad specificity. HAMAP-Rule MF_02113

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_02113

Pathway

Protein degradation; proteasomal Pup-dependent pathway. HAMAP-Rule MF_02113

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_02113.

Sequence similarities

Belongs to the peptidase T1B family.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Propeptide1 – 4747Removed in mature form; by autocatalysis By similarity
PRO_0000397600
Chain48 – 270223Proteasome subunit beta HAMAP-Rule MF_02113
PRO_0000397601

Sites

Active site481Nucleophile By similarity

Sequences

Sequence LengthMass (Da)Tools
D1BS26 [UniParc].

Last modified January 19, 2010. Version 1.
Checksum: A596C6E13D842BC2

FASTA27028,601
        10         20         30         40         50         60 
MSNRGRLGDA FLRPGSSSFL DFLSDHAPEL LPGRSAAAGN APLAPHATTI VALTFQDGVV 

        70         80         90        100        110        120 
MAGDRRATAG TMIASREIEK VFPADDYSVI GISGSAGIGV DLARLFQLEL EHYEKIEGSL 

       130        140        150        160        170        180 
LSLDGKANRL GTLLRGNLPL AMQGFVVVPL FGGYDLDRGA GRIFSYDATG GRYEEHEHHG 

       190        200        210        220        230        240 
TGSGAIFARG ALKKLWRPGM DAAEAVKVAV EALYDAADDD AATGGPDPVR RIWPVVTTVT 

       250        260        270 
AAGYRRVPED ELATLVDALL AVRTERGRLA 

« Hide

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
CP001821 Genomic DNA. Translation: ACZ30518.1.
RefSeqYP_003326076.1. NC_013530.1.

3D structure databases

ModBaseSearch...
MobiDBSearch...

Protein family/group databases

MEROPST01.005.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaACZ30518; ACZ30518; Xcel_1488.
GeneID8649010.
KEGGxce:Xcel_1488.
PATRIC32551977. VBIXylCel24446_1527.

Organism-specific databases

CMRSearch...

Phylogenomic databases

HOGENOMHOG000245308.
KOK03433.
OMAFQVELEH.
OrthoDBEOG6XM79W.

Enzyme and pathway databases

BioCycXCEL446471:GHA2-1518-MONOMER.
UniPathwayUPA00997.

Family and domain databases

Gene3D3.60.20.10. 1 hit.
HAMAPMF_02113_B. Proteasome_B_B.
InterProIPR029055. Ntn_hydrolases_N.
IPR022483. Pept_T1A_Psome_suB_actinobac.
IPR000243. Pept_T1A_subB.
IPR001353. Proteasome_sua/b.
IPR023333. Proteasome_suB-type.
[Graphical view]
PfamPF00227. Proteasome. 1 hit.
[Graphical view]
PRINTSPR00141. PROTEASOME.
SUPFAMSSF56235. SSF56235. 1 hit.
TIGRFAMsTIGR03690. 20S_bact_beta. 1 hit.
PROSITEPS51476. PROTEASOME_BETA_2. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry namePSB_XYLCX
AccessionPrimary (citable) accession number: D1BS26
Entry history
Integrated into UniProtKB/Swiss-Prot: August 10, 2010
Last sequence update: January 19, 2010
Last modified: June 11, 2014
This is version 30 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