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Q9UXF3

- PSB2_SULSO

UniProt

Q9UXF3 - PSB2_SULSO

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Protein

Proteasome subunit beta 2

Gene

psmB2

Organism
Sulfolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2)
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.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.UniRule annotation

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Active sitei15 – 151NucleophileUniRule annotation

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

BioCyciSSOL273057:GCH2-735-MONOMER.

Protein family/group databases

MEROPSiT01.002.

Names & Taxonomyi

Protein namesi
Recommended name:
Proteasome subunit beta 2UniRule annotation (EC:3.4.25.1UniRule annotation)
Alternative name(s):
20S proteasome beta subunit 2UniRule annotation
Proteasome core protein PsmB 2UniRule annotation
Gene namesi
Name:psmB2UniRule annotation
Ordered Locus Names:SSO0766
ORF Names:C40_002
OrganismiSulfolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2)
Taxonomic identifieri273057 [NCBI]
Taxonomic lineageiArchaeaCrenarchaeotaThermoproteiSulfolobalesSulfolobaceaeSulfolobus
ProteomesiUP000001974: Chromosome

Subcellular locationi

Cytoplasm UniRule annotation

GO - Cellular componenti

  1. cytoplasm Source: UniProtKB-HAMAP
  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 – 1414Removed in mature form; by autocatalysisUniRule annotationPRO_0000026673Add
BLAST
Chaini15 – 208194Proteasome subunit beta 2PRO_0000026674Add
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.UniRule annotation

Protein-protein interaction databases

STRINGi273057.SSO0766.

Structurei

3D structure databases

ProteinModelPortaliQ9UXF3.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the peptidase T1B family.UniRule annotation

Phylogenomic databases

eggNOGiCOG0638.
HOGENOMiHOG000091083.
InParanoidiQ9UXF3.
KOiK03433.
OMAiHIRIANC.

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.

Q9UXF3-1 [UniParc]FASTAAdd to Basket

« Hide

        10         20         30         40         50
MGNELQLENK ILKGTTTVGI RVNDGVILAA DRRASAGFFV ANKMVRKVLY
60 70 80 90 100
ITDKIGITTA GSVADLQFIY DVLKNIYHYN SITKYGPISI KGIATRLANV
110 120 130 140 150
LSATKYFPYI VQILIGGYDD QPRLFNLDYL GDITEENYVA TGSGSPVAMG
160 170 180 190 200
VLEDEYNPKM TLDEAADLAK RAVFSAIKRD SFTGTGVIVA KIHSKGHEEL

EFYLNKKM
Length:208
Mass (Da):22,927
Last modified:December 1, 2000 - v2
Checksum:iC940A8273AB25CB9
GO

Sequence cautioni

The sequence AAK41063.1 differs from that shown. Reason: Erroneous initiation. Curated
The sequence CAB57537.1 differs from that shown. Reason: Erroneous initiation. Curated

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
Y18930 Genomic DNA. Translation: CAB57537.1. Different initiation.
AE006641 Genomic DNA. Translation: AAK41063.1. Different initiation.
PIRiH90225.
RefSeqiNP_342273.1. NC_002754.1.

Genome annotation databases

EnsemblBacteriaiAAK41063; AAK41063; SSO0766.
GeneIDi1455030.
KEGGisso:SSO0766.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
Y18930 Genomic DNA. Translation: CAB57537.1 . Different initiation.
AE006641 Genomic DNA. Translation: AAK41063.1 . Different initiation.
PIRi H90225.
RefSeqi NP_342273.1. NC_002754.1.

3D structure databases

ProteinModelPortali Q9UXF3.
ModBasei Search...
MobiDBi Search...

Protein-protein interaction databases

STRINGi 273057.SSO0766.

Protein family/group databases

MEROPSi T01.002.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

EnsemblBacteriai AAK41063 ; AAK41063 ; SSO0766 .
GeneIDi 1455030.
KEGGi sso:SSO0766.

Phylogenomic databases

eggNOGi COG0638.
HOGENOMi HOG000091083.
InParanoidi Q9UXF3.
KOi K03433.
OMAi HIRIANC.

Enzyme and pathway databases

BioCyci SSOL273057:GCH2-735-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: ATCC 35092 / DSM 1617 / JCM 11322 / P2.
  2. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: ATCC 35092 / DSM 1617 / JCM 11322 / P2.

Entry informationi

Entry nameiPSB2_SULSO
AccessioniPrimary (citable) accession number: Q9UXF3
Entry historyi
Integrated into UniProtKB/Swiss-Prot: December 1, 2000
Last sequence update: December 1, 2000
Last modified: October 29, 2014
This is version 94 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic 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