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Q975U8

- PSB1_SULTO

UniProt

Q975U8 - PSB1_SULTO

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Protein
Proteasome subunit beta 1
Gene
psmB1, STK_03240
Organism
Sulfolobus tokodaii (strain DSM 16993 / JCM 10545 / NBRC 100140 / 7)
Status
Reviewed - Annotation score: 3 out of 5 - Protein inferred from homologyi

Functioni

Component of the proteasome core, a large protease complex with broad specificity involved in protein degradation By similarity.UniRule annotation

Catalytic activityi

Cleavage of peptide bonds with very broad specificity.UniRule annotation

Enzyme regulationi

The formation of the proteasomal ATPase PAN-20S proteasome complex, via the docking of the C-termini of PAN into the intersubunit pockets in the alpha-rings, triggers 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.UniRule annotation

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Active sitei7 – 71Nucleophile Reviewed prediction

GO - Molecular functioni

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

GO - Biological processi

  1. proteasomal protein catabolic process Source: UniProtKB-HAMAP
Complete GO annotation...

Keywords - Molecular functioni

Hydrolase, Protease, Threonine protease

Enzyme and pathway databases

BioCyciSTOK273063:GJC7-373-MONOMER.

Protein family/group databases

MEROPSiT01.002.

Names & Taxonomyi

Protein namesi
Recommended name:
Proteasome subunit beta 1 (EC:3.4.25.1)
Alternative name(s):
20S proteasome beta subunit 1
Proteasome core protein PsmB 1
Gene namesi
Name:psmB1
Ordered Locus Names:STK_03240
OrganismiSulfolobus tokodaii (strain DSM 16993 / JCM 10545 / NBRC 100140 / 7)
Taxonomic identifieri273063 [NCBI]
Taxonomic lineageiArchaeaCrenarchaeotaThermoproteiSulfolobalesSulfolobaceaeSulfolobus
ProteomesiUP000001015: Chromosome

Subcellular locationi

Cytoplasm By similarity UniRule annotation

GO - Cellular componenti

  1. cytoplasm Source: UniProtKB-SubCell
  2. proteasome core complex, beta-subunit complex Source: UniProtKB-HAMAP
Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm, Proteasome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Propeptidei1 – 66Removed in mature form; by autocatalysis Reviewed prediction
PRO_0000397462
Chaini7 – 197191Proteasome subunit beta 1UniRule annotation
PRO_0000397463Add
BLAST

Keywords - PTMi

Autocatalytic cleavage, Zymogen

Interactioni

Subunit structurei

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 at one or both ends by the proteasome regulatory ATPase, PAN By similarity.

Protein-protein interaction databases

STRINGi273063.ST0324.

Structurei

3D structure databases

ProteinModelPortaliQ975U8.

Family & Domainsi

Sequence similaritiesi

Belongs to the peptidase T1B family.

Phylogenomic databases

eggNOGiCOG0638.
HOGENOMiHOG000091083.
KOiK03433.
OMAiYSYKLAP.

Family and domain databases

Gene3Di3.60.20.10. 1 hit.
HAMAPiMF_02113_A. Proteasome_B_A.
InterProiIPR029055. Ntn_hydrolases_N.
IPR019983. Pept_T1A_Psome_bsu_arc.
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.
TIGRFAMsiTIGR03634. arc_protsome_B. 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.

Q975U8-1 [UniParc]FASTAAdd to Basket

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MEELPATALG IKLNDGIILA AERRLSYGGF VLSRSAKKVF KIGRFGIAGA    50
GIMGDIQTLT RLMNVEIKYY EMYNNKPISV KAAAKLLSVI LYQYKWTPFI 100
SELLFGGVDD EGPKLFVLDP IGSLIEDNYA AVGSGARVAI GVLESEYDPS 150
MNLDKGKEIV LKALKAAIER DVTSGDGIDI LTIKRDNTSS EDFIKIF 197
Length:197
Mass (Da):21,530
Last modified:December 1, 2001 - v1
Checksum:i37491A157EBD0EB9
GO

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
BA000023 Genomic DNA. Translation: BAB65301.1.
RefSeqiNP_376192.1. NC_003106.2.
WP_010978284.1. NC_003106.2.

Genome annotation databases

EnsemblBacteriaiBAB65301; BAB65301; STK_03240.
GeneIDi1458238.
KEGGisto:ST0324.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
BA000023 Genomic DNA. Translation: BAB65301.1 .
RefSeqi NP_376192.1. NC_003106.2.
WP_010978284.1. NC_003106.2.

3D structure databases

ProteinModelPortali Q975U8.
ModBasei Search...
MobiDBi Search...

Protein-protein interaction databases

STRINGi 273063.ST0324.

Protein family/group databases

MEROPSi T01.002.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

EnsemblBacteriai BAB65301 ; BAB65301 ; STK_03240 .
GeneIDi 1458238.
KEGGi sto:ST0324.

Phylogenomic databases

eggNOGi COG0638.
HOGENOMi HOG000091083.
KOi K03433.
OMAi YSYKLAP.

Enzyme and pathway databases

BioCyci STOK273063:GJC7-373-MONOMER.

Family and domain databases

Gene3Di 3.60.20.10. 1 hit.
HAMAPi MF_02113_A. Proteasome_B_A.
InterProi IPR029055. Ntn_hydrolases_N.
IPR019983. Pept_T1A_Psome_bsu_arc.
IPR000243. Pept_T1A_subB.
IPR016050. Proteasome_bsu_CS.
IPR001353. Proteasome_sua/b.
IPR023333. Proteasome_suB-type.
[Graphical view ]
Pfami PF00227. Proteasome. 1 hit.
[Graphical view ]
PRINTSi PR00141. PROTEASOME.
SUPFAMi SSF56235. SSF56235. 1 hit.
TIGRFAMsi TIGR03634. arc_protsome_B. 1 hit.
PROSITEi PS00854. PROTEASOME_BETA_1. 1 hit.
PS51476. PROTEASOME_BETA_2. 1 hit.
[Graphical view ]
ProtoNeti Search...

Publicationsi

  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: DSM 16993 / JCM 10545 / NBRC 100140 / 7.

Entry informationi

Entry nameiPSB1_SULTO
AccessioniPrimary (citable) accession number: Q975U8
Entry historyi
Integrated into UniProtKB/Swiss-Prot: August 10, 2010
Last sequence update: December 1, 2001
Last modified: September 3, 2014
This is version 76 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete 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

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