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Q9HR36

- PSB_HALSA

UniProt

Q9HR36 - PSB_HALSA

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Protein

Proteasome subunit beta

Gene
psmB, VNG_0880G
Organism
Halobacterium salinarum (strain ATCC 700922 / JCM 11081 / NRC-1) (Halobacterium halobium)
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 sitei49 – 491Nucleophile By similarity

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

Protein family/group databases

MEROPSiT01.002.

Names & Taxonomyi

Protein namesi
Recommended name:
Proteasome subunit beta (EC:3.4.25.1)
Alternative name(s):
20S proteasome beta subunit
Proteasome core protein PsmB
Gene namesi
Name:psmB
Ordered Locus Names:VNG_0880G
OrganismiHalobacterium salinarum (strain ATCC 700922 / JCM 11081 / NRC-1) (Halobacterium halobium)
Taxonomic identifieri64091 [NCBI]
Taxonomic lineageiArchaeaEuryarchaeotaHalobacteriaHalobacterialesHalobacteriaceaeHalobacterium
ProteomesiUP000000554: 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 – 4848Removed in mature form; by autocatalysis By similarityPRO_0000397298Add
BLAST
Chaini49 – 243195Proteasome subunit betaUniRule annotationPRO_0000397299Add
BLAST

Keywords - PTMi

Autocatalytic cleavage, Zymogen

Proteomic databases

PaxDbiQ9HR36.
PRIDEiQ9HR36.

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

STRINGi64091.VNG0880G.

Structurei

3D structure databases

ProteinModelPortaliQ9HR36.

Family & Domainsi

Sequence similaritiesi

Belongs to the peptidase T1B family.

Phylogenomic databases

eggNOGiCOG0638.
KOiK03433.
OMAiYEMRTAG.
PhylomeDBiQ9HR36.

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.
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.
PROSITEiPS51476. PROTEASOME_BETA_2. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

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

Q9HR36-1 [UniParc]FASTAAdd to Basket

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MFNPNNGSEF ARNRARLDDT PNPYEPEVGS LPEGDRSQAG SDTVNKTGTT    50
IVGLTTQDGV LMASDMRASL GGRVISNKNV QKVEEIQPNA ALSISGSVGG 100
AQSFIRSLRA EANLYEARRG EYMSIDALST MASNLLRGGP FFRVVPILGG 150
VDDDGGHVFS LDPAGSSMSD TYTAQGSGMP YALGVLEQEY SEDLTMADAE 200
QVAAHAVKSA SERDTASGNG IHITKITHDG LTTVGHKEFD ALL 243
Length:243
Mass (Da):25,642
Last modified:August 10, 2010 - v2
Checksum:i605CCA765FC8C487
GO

Sequence cautioni

The sequence AAG19322.1 differs from that shown. Reason: Erroneous initiation. Translation N-terminally shortened.

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
AE004437 Genomic DNA. Translation: AAG19322.1. Different initiation.
PIRiF84244.
RefSeqiNP_279842.1. NC_002607.1.

Genome annotation databases

EnsemblBacteriaiAAG19322; AAG19322; VNG_0880G.
GeneIDi1447627.
KEGGihal:VNG0880G.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
AE004437 Genomic DNA. Translation: AAG19322.1 . Different initiation.
PIRi F84244.
RefSeqi NP_279842.1. NC_002607.1.

3D structure databases

ProteinModelPortali Q9HR36.
ModBasei Search...
MobiDBi Search...

Protein-protein interaction databases

STRINGi 64091.VNG0880G.

Protein family/group databases

MEROPSi T01.002.

Proteomic databases

PaxDbi Q9HR36.
PRIDEi Q9HR36.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

EnsemblBacteriai AAG19322 ; AAG19322 ; VNG_0880G .
GeneIDi 1447627.
KEGGi hal:VNG0880G.

Phylogenomic databases

eggNOGi COG0638.
KOi K03433.
OMAi YEMRTAG.
PhylomeDBi Q9HR36.

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.
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 PS51476. PROTEASOME_BETA_2. 1 hit.
[Graphical view ]
ProtoNeti Search...

Publicationsi

  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: ATCC 700922 / JCM 11081 / NRC-1.

Entry informationi

Entry nameiPSB_HALSA
AccessioniPrimary (citable) accession number: Q9HR36
Entry historyi
Integrated into UniProtKB/Swiss-Prot: August 10, 2010
Last sequence update: August 10, 2010
Last modified: June 11, 2014
This is version 72 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

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