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D2PK63

- PSB1_SULID

UniProt

D2PK63 - PSB1_SULID

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Protein

Proteasome subunit beta 1

Gene

psmB1

Organism
Sulfolobus islandicus (strain L.D.8.5 / Lassen #2)
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 sitei18 – 181NucleophileUniRule 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

BioCyciSISL425944:GHS5-1481-MONOMER.

Protein family/group databases

MEROPSiT01.002.

Names & Taxonomyi

Protein namesi
Recommended name:
Proteasome subunit beta 1UniRule annotation (EC:3.4.25.1UniRule annotation)
Alternative name(s):
20S proteasome beta subunit 1UniRule annotation
Proteasome core protein PsmB 1UniRule annotation
Gene namesi
Name:psmB1UniRule annotation
Ordered Locus Names:LD85_1499
OrganismiSulfolobus islandicus (strain L.D.8.5 / Lassen #2)
Taxonomic identifieri425944 [NCBI]
Taxonomic lineageiArchaeaCrenarchaeotaThermoproteiSulfolobalesSulfolobaceaeSulfolobus
ProteomesiUP000001404: 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 – 1717Removed in mature form; by autocatalysisUniRule annotationPRO_0000397428Add
BLAST
Chaini18 – 211194Proteasome subunit beta 1PRO_0000397429Add
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

Family & Domainsi

Sequence similaritiesi

Belongs to the peptidase T1B family.UniRule annotation

Phylogenomic databases

HOGENOMiHOG000091083.
KOiK03433.
OMAiGYYIAHR.

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.

D2PK63-1 [UniParc]FASTAAdd to Basket

« Hide

        10         20         30         40         50
MVIMGNELQL ENKILKGTTT VGIKVNDGVV LAADRRASAG FFVANKMVRK
60 70 80 90 100
VLYITDKIGI TTAGSVADLQ FIYDVLKNIY HYNSITKYGP ISIKGIATRL
110 120 130 140 150
ANVLSATKYF PYIVQILIGG YDDQPRLFNL DYLGDITEEN YVATGSGSPV
160 170 180 190 200
AMGVLEDEYN PKMTLDEAAD LAKRAVFSAI KRDSFTGTGV IVAKIHSKGH
210
EELEFYLNKK V
Length:211
Mass (Da):23,197
Last modified:March 2, 2010 - v1
Checksum:iF0289EF0080F474B
GO

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
CP001731 Genomic DNA. Translation: ADB87166.1.
RefSeqiYP_003419536.1. NC_013769.1.

Genome annotation databases

EnsemblBacteriaiADB87166; ADB87166; LD85_1499.
GeneIDi8761320.
KEGGisii:LD85_1499.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
CP001731 Genomic DNA. Translation: ADB87166.1 .
RefSeqi YP_003419536.1. NC_013769.1.

3D structure databases

ModBasei Search...
MobiDBi Search...

Protein family/group databases

MEROPSi T01.002.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

EnsemblBacteriai ADB87166 ; ADB87166 ; LD85_1499 .
GeneIDi 8761320.
KEGGi sii:LD85_1499.

Phylogenomic databases

HOGENOMi HOG000091083.
KOi K03433.
OMAi GYYIAHR.

Enzyme and pathway databases

BioCyci SISL425944:GHS5-1481-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: L.D.8.5 / Lassen #2.

Entry informationi

Entry nameiPSB1_SULID
AccessioniPrimary (citable) accession number: D2PK63
Entry historyi
Integrated into UniProtKB/Swiss-Prot: August 10, 2010
Last sequence update: March 2, 2010
Last modified: October 29, 2014
This is version 28 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