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Protein

Proteasome subunit beta type-8

Gene

PSMB8

Organism
Bos taurus (Bovine)
Status
Reviewed-Annotation score: Annotation score: 4 out of 5-Experimental evidence at protein leveli

Functioni

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 (By similarity). Required for adipocyte differentiation (By similarity).By similarity

Catalytic activityi

Cleavage of peptide bonds with very broad specificity.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Sitei72 – 732Cleavage; by autolysisBy similarity
Active sitei73 – 731NucleophileBy similarity

GO - Molecular functioni

  1. threonine-type endopeptidase activity Source: UniProtKB-KW

GO - Biological processi

  1. antigen processing and presentation Source: Ensembl
  2. fat cell differentiation Source: UniProtKB
  3. proteolysis involved in cellular protein catabolic process Source: InterPro
Complete GO annotation...

Keywords - Molecular functioni

Hydrolase, Protease, Threonine protease

Keywords - Biological processi

Differentiation, Immunity

Enzyme and pathway databases

ReactomeiREACT_274004. degradation of DVL.
REACT_276477. ER-Phagosome pathway.
REACT_280521. Activation of NF-kappaB in B cells.
REACT_282220. Asymmetric localization of PCP proteins.
REACT_284817. Hh ligand biogenesis disease.
REACT_290505. SCF(Skp2)-mediated degradation of p27/p21.
REACT_291730. Separation of Sister Chromatids.
REACT_293325. Ubiquitin Mediated Degradation of Phosphorylated Cdc25A.
REACT_295102. CDT1 association with the CDC6:ORC:origin complex.
REACT_297209. Degradation of beta-catenin by the destruction complex.
REACT_302851. CDK-mediated phosphorylation and removal of Cdc6.
REACT_304977. APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1.
REACT_306095. Autodegradation of the E3 ubiquitin ligase COP1.
REACT_307496. Hedgehog ligand biogenesis.
REACT_308391. Ubiquitin-dependent degradation of Cyclin D1.
REACT_311810. Hedgehog 'on' state.
REACT_314321. Cross-presentation of soluble exogenous antigens (endosomes).
REACT_321728. Regulation of ornithine decarboxylase (ODC).
REACT_326365. Autodegradation of Cdh1 by Cdh1:APC/C.
REACT_327729. Degradation of GLI2 by the proteasome.
REACT_328795. Orc1 removal from chromatin.
REACT_328929. SCF-beta-TrCP mediated degradation of Emi1.
REACT_329551. degradation of AXIN.
REACT_329646. AUF1 (hnRNP D0) destabilizes mRNA.
REACT_330101. Antigen processing: Ubiquitination & Proteasome degradation.
REACT_333090. GLI3 is processed to GLI3R by the proteasome.
REACT_335347. Cdc20:Phospho-APC/C mediated degradation of Cyclin A.
REACT_337384. Degradation of GLI1 by the proteasome.
REACT_338497. APC/C:Cdc20 mediated degradation of Securin.
REACT_350460. Regulation of activated PAK-2p34 by proteasome mediated degradation.

Names & Taxonomyi

Protein namesi
Recommended name:
Proteasome subunit beta type-8 (EC:3.4.25.1)
Alternative name(s):
Proteasome subunit beta-5i
Gene namesi
Name:PSMB8
OrganismiBos taurus (Bovine)
Taxonomic identifieri9913 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaLaurasiatheriaCetartiodactylaRuminantiaPecoraBovidaeBovinaeBos
ProteomesiUP000009136 Componenti: Chromosome 23

Subcellular locationi

Cytoplasm PROSITE-ProRule annotation. Nucleus By similarity

GO - Cellular componenti

  1. cytoplasm Source: UniProtKB-SubCell
  2. extracellular vesicular exosome Source: Ensembl
  3. nucleus Source: UniProtKB-SubCell
  4. proteasome core complex Source: UniProtKB
  5. spermatoproteasome complex Source: UniProtKB
Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm, Nucleus, Proteasome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Propeptidei1 – 7272Removed in mature formBy similarityPRO_0000239856Add
BLAST
Chaini73 – 276204Proteasome subunit beta type-8PRO_0000239857Add
BLAST

Post-translational modificationi

Autocleaved. The resulting N-terminal Thr residue of the mature subunit is responsible for the nucleophile proteolytic activity.By similarity

Keywords - PTMi

Zymogen

Proteomic databases

PRIDEiQ3T112.

Expressioni

Inductioni

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

Gene expression databases

ExpressionAtlasiQ3T112. baseline and differential.

Interactioni

Subunit structurei

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.

Protein-protein interaction databases

IntActiQ3T112. 1 interaction.

Structurei

3D structure databases

ProteinModelPortaliQ3T112.
SMRiQ3T112. Positions 73-271.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the peptidase T1B family.PROSITE-ProRule annotation

Phylogenomic databases

eggNOGiCOG0638.
GeneTreeiENSGT00510000046395.
HOGENOMiHOG000091082.
HOVERGENiHBG108297.
InParanoidiQ3T112.
KOiK02740.
OMAiATIRVNK.
OrthoDBiEOG7FNC86.
TreeFamiTF106223.

Family and domain databases

Gene3Di3.60.20.10. 1 hit.
InterProiIPR029055. Ntn_hydrolases_N.
IPR000243. Pept_T1A_subB.
IPR016050. Proteasome_bsu_CS.
IPR001353. Proteasome_sua/b.
IPR023333. Proteasome_suB-type.
[Graphical view]
PfamiPF00227. Proteasome. 1 hit.
[Graphical view]
PRINTSiPR00141. PROTEASOME.
SUPFAMiSSF56235. SSF56235. 1 hit.
PROSITEiPS00854. PROTEASOME_BETA_1. 1 hit.
PS51476. PROTEASOME_BETA_2. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

Q3T112-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MALLDVCGAP GGQRGDWAVP LAGSRQRSDP GHYGFSLRSP ELALPRGMQP
60 70 80 90 100
TEFFRSLGGN GESKVQIEMA HGTTTLAFKF QHGVIVAVDS RASAGNYIAT
110 120 130 140 150
LKVNKVIEIN PYLLGTMSGC AADCLYWERL LAKECRLYYL RNGERISVSA
160 170 180 190 200
ASKLLSNMMC QYRGMGLSMG SMICGWDKKG PGLYYVDENG TRLSGNMFST
210 220 230 240 250
GSGNSHAYGV MDSGYRPDLS IEEAYDLGRR AIVHATHRDS YSGGVVNMYH
260 270
MKEDGWVKVE STDVSDLMHQ YREASQ
Length:276
Mass (Da):30,268
Last modified:June 12, 2006 - v2
Checksum:i5FE3755A1C1BF361
GO

Experimental Info

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Sequence conflicti10 – 112PG → TR in AAI02171 (Ref. 2) Curated
Sequence conflicti42 – 421L → F in AAI02171 (Ref. 2) Curated
Sequence conflicti99 – 991A → D in AAI02171 (Ref. 2) Curated
Sequence conflicti125 – 1251L → Q in AAI02171 (Ref. 2) Curated
Sequence conflicti187 – 1893DEN → NDS in AAI02171 (Ref. 2) Curated

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AY957499 Genomic DNA. Translation: AAY34697.1.
BC102170 mRNA. Translation: AAI02171.1.
RefSeqiNP_001035570.1. NM_001040480.2.
XP_005223251.1. XM_005223194.2.
UniGeneiBt.53697.

Genome annotation databases

EnsembliENSBTAT00000003955; ENSBTAP00000003955; ENSBTAG00000003039.
GeneIDi282013.
KEGGibta:282013.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AY957499 Genomic DNA. Translation: AAY34697.1.
BC102170 mRNA. Translation: AAI02171.1.
RefSeqiNP_001035570.1. NM_001040480.2.
XP_005223251.1. XM_005223194.2.
UniGeneiBt.53697.

3D structure databases

ProteinModelPortaliQ3T112.
SMRiQ3T112. Positions 73-271.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

IntActiQ3T112. 1 interaction.

Proteomic databases

PRIDEiQ3T112.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsembliENSBTAT00000003955; ENSBTAP00000003955; ENSBTAG00000003039.
GeneIDi282013.
KEGGibta:282013.

Organism-specific databases

CTDi5696.

Phylogenomic databases

eggNOGiCOG0638.
GeneTreeiENSGT00510000046395.
HOGENOMiHOG000091082.
HOVERGENiHBG108297.
InParanoidiQ3T112.
KOiK02740.
OMAiATIRVNK.
OrthoDBiEOG7FNC86.
TreeFamiTF106223.

Enzyme and pathway databases

ReactomeiREACT_274004. degradation of DVL.
REACT_276477. ER-Phagosome pathway.
REACT_280521. Activation of NF-kappaB in B cells.
REACT_282220. Asymmetric localization of PCP proteins.
REACT_284817. Hh ligand biogenesis disease.
REACT_290505. SCF(Skp2)-mediated degradation of p27/p21.
REACT_291730. Separation of Sister Chromatids.
REACT_293325. Ubiquitin Mediated Degradation of Phosphorylated Cdc25A.
REACT_295102. CDT1 association with the CDC6:ORC:origin complex.
REACT_297209. Degradation of beta-catenin by the destruction complex.
REACT_302851. CDK-mediated phosphorylation and removal of Cdc6.
REACT_304977. APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1.
REACT_306095. Autodegradation of the E3 ubiquitin ligase COP1.
REACT_307496. Hedgehog ligand biogenesis.
REACT_308391. Ubiquitin-dependent degradation of Cyclin D1.
REACT_311810. Hedgehog 'on' state.
REACT_314321. Cross-presentation of soluble exogenous antigens (endosomes).
REACT_321728. Regulation of ornithine decarboxylase (ODC).
REACT_326365. Autodegradation of Cdh1 by Cdh1:APC/C.
REACT_327729. Degradation of GLI2 by the proteasome.
REACT_328795. Orc1 removal from chromatin.
REACT_328929. SCF-beta-TrCP mediated degradation of Emi1.
REACT_329551. degradation of AXIN.
REACT_329646. AUF1 (hnRNP D0) destabilizes mRNA.
REACT_330101. Antigen processing: Ubiquitination & Proteasome degradation.
REACT_333090. GLI3 is processed to GLI3R by the proteasome.
REACT_335347. Cdc20:Phospho-APC/C mediated degradation of Cyclin A.
REACT_337384. Degradation of GLI1 by the proteasome.
REACT_338497. APC/C:Cdc20 mediated degradation of Securin.
REACT_350460. Regulation of activated PAK-2p34 by proteasome mediated degradation.

Miscellaneous databases

NextBioi20805879.

Gene expression databases

ExpressionAtlasiQ3T112. baseline and differential.

Family and domain databases

Gene3Di3.60.20.10. 1 hit.
InterProiIPR029055. Ntn_hydrolases_N.
IPR000243. Pept_T1A_subB.
IPR016050. Proteasome_bsu_CS.
IPR001353. Proteasome_sua/b.
IPR023333. Proteasome_suB-type.
[Graphical view]
PfamiPF00227. Proteasome. 1 hit.
[Graphical view]
PRINTSiPR00141. PROTEASOME.
SUPFAMiSSF56235. SSF56235. 1 hit.
PROSITEiPS00854. PROTEASOME_BETA_1. 1 hit.
PS51476. PROTEASOME_BETA_2. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. "Comparative analysis of the bovine MHC class IIb sequence identifies inversion breakpoints and three unexpected genes."
    Childers C.P., Newkirk H.L., Honeycutt D.A., Ramlachan N., Muzney D.M., Sodergren E., Gibbs R.A., Weinstock G.M., Womack J.E., Skow L.C.
    Anim. Genet. 37:121-129(2005) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
  2. NIH - Mammalian Gene Collection (MGC) project
    Submitted (JUL-2005) to the EMBL/GenBank/DDBJ databases
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
    Strain: Crossbred X Angus.
    Tissue: Ileum.

Entry informationi

Entry nameiPSB8_BOVIN
AccessioniPrimary (citable) accession number: Q3T112
Secondary accession number(s): Q32S32
Entry historyi
Integrated into UniProtKB/Swiss-Prot: June 12, 2006
Last sequence update: June 12, 2006
Last modified: March 31, 2015
This is version 79 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. Peptidase families
    Classification of peptidase families and list of entries
  2. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.