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Q29576 (PSB8_PIG) Reviewed, UniProtKB/Swiss-Prot

Last modified June 11, 2014. Version 83. 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 beta type-8

EC=3.4.25.1
Alternative name(s):
Macropain subunit C13
Multicatalytic endopeptidase complex subunit C13
Proteasome component C13
Proteasome subunit beta-5i
Gene names
Name:PSMB8
OrganismSus scrofa (Pig) [Reference proteome]
Taxonomic identifier9823 [NCBI]
Taxonomic lineageEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaLaurasiatheriaCetartiodactylaSuinaSuidaeSus

Protein attributes

Sequence length104 AA.
Sequence statusFragment.
Protein existenceEvidence at protein level

General annotation (Comments)

Function

The proteasome is a multicatalytic proteinase complex which is characterized by its ability to cleave peptides with Arg, Phe, Tyr, Leu, and Glu adjacent to the leaving group at neutral or slightly basic pH. The proteasome has an ATP-dependent proteolytic activity. This subunit is involved in antigen processing to generate class I binding peptides. Required for adipocyte differentiation By similarity.

Catalytic activity

Cleavage of peptide bonds with very broad specificity.

Subunit structure

The 26S proteasome consists of a 20S proteasome core and two 19S regulatory subunits. The 20S proteasome core is composed of 28 subunits that are arranged in four stacked rings, resulting in a barrel-shaped structure. The two end rings are each formed by seven alpha subunits, and the two central rings are each formed by seven beta subunits. The catalytic chamber with the active sites is on the inside of the barrel. Component of the immunoproteasome, where it displaces the equivalent housekeeping subunit PSMB5. Component of the spermatoproteasome, a form of the proteasome specifically found in testis. Directly interacts with POMP By similarity.

Subcellular location

Cytoplasm By similarity. Nucleus By similarity.

Induction

Up-regulated by interferon gamma (at protein level).

Sequence similarities

Belongs to the peptidase T1B family.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain‹1 – ›104›104Proteasome subunit beta type-8
PRO_0000148074

Experimental info

Non-terminal residue11
Non-terminal residue1041

Sequences

Sequence LengthMass (Da)Tools
Q29576 [UniParc].

Last modified November 1, 1996. Version 1.
Checksum: E5EA18ABBA22189C

FASTA10411,604
        10         20         30         40         50         60 
RLYYLRNGAR ISVSAASKLX SNMMYQYRGM GLSMGSMICG WDKKGPGLYY VDENGTRLSG 

        70         80         90        100 
NMFSTGSGNT YAYGVMDSGH RYDLSIEEAY DLGRRAIVHA THRD 

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References

[1]"Evaluation and characterization of a porcine small intestine cDNA library: analysis of 839 clones."
Winteroe A.K., Fredholm M., Davies W.
Mamm. Genome 7:509-517(1996) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
Tissue: Small intestine.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
F14798 mRNA. Translation: CAA23263.1.

3D structure databases

ModBaseSearch...
MobiDBSearch...

Proteomic databases

PaxDbQ29576.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Phylogenomic databases

eggNOGCOG0638.
HOVERGENHBG108297.

Family and domain databases

Gene3D3.60.20.10. 1 hit.
InterProIPR029055. Ntn_hydrolases_N.
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.
PROSITEPS51476. PROTEASOME_BETA_2. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry namePSB8_PIG
AccessionPrimary (citable) accession number: Q29576
Entry history
Integrated into UniProtKB/Swiss-Prot: July 15, 1998
Last sequence update: November 1, 1996
Last modified: June 11, 2014
This is version 83 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families

Peptidase families

Classification of peptidase families and list of entries