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Gene Ontology Classifications
Symbol
Name
ID
Psmb8
proteasome (prosome, macropain) subunit, beta type 8 (large multifunctional peptidase 7)
MGI:1346527

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Summary from NCBI RefSeq

[Summary is not available for the mouse gene. This summary is for the human ortholog.] The proteasome is a multicatalytic proteinase complex with a highly ordered ring-shaped 20S core structure. The core structure is composed of 4 rings of 28 non-identical subunits; 2 rings are composed of 7 alpha subunits and 2 rings are composed of 7 beta subunits. Proteasomes are distributed throughout eukaryotic cells at a high concentration and cleave peptides in an ATP/ubiquitin-dependent process in a non-lysosomal pathway. An essential function of a modified proteasome, the immunoproteasome, is the processing of class I MHC peptides. This gene encodes a member of the proteasome B-type family, also known as the T1B family, that is a 20S core beta subunit. This gene is located in the class II region of the MHC (major histocompatibility complex). Expression of this gene is induced by gamma interferon and this gene product replaces catalytic subunit 3 (proteasome beta 5 subunit) in the immunoproteasome. Proteolytic processing is required to generate a mature subunit. Two alternative transcripts encoding two isoforms have been identified; both isoforms are processed to yield the same mature subunit. [provided by RefSeq, Jul 2008]



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Gene Ontology Evidence Code Abbreviations:

Experimental:
EXP
Inferred from experiment
IDA
Inferred from direct assay
IEP
Inferred from expression pattern
IGI
Inferred from genetic interaction
IMP
Inferred from mutant phenotype
IPI
Inferred from physical interaction
Homology:
IAS
Inferred from ancestral sequence
IBA
Inferred from biological aspect of ancestor
IBD
Inferred from biological aspect of descendant
IKR
Inferred from key residues
IMR
Inferred from missing residues
IRD
Inferred from rapid divergence
ISA
Inferred from sequence alignment
ISM
Inferred from sequence model
ISO
Inferred from sequence orthology
ISS
Inferred from sequence or structural similarity
Automated:
IEA
Inferred from electronic annotation
RCA
Reviewed computational analysis
Other:
IC
Inferred by curator
NAS
Non-traceable author statement
ND
No biological data available
TAS
Traceable author statement

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Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Tumor Biology (MTB), Gene Ontology (GO), MouseCyc
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last database update
06/15/2016
MGI 6.04
The Jackson Laboratory