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Q3IPX1

- PSB_NATPD

UniProt

Q3IPX1 - PSB_NATPD

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Protein

Proteasome subunit beta

Gene

psmB

Organism
Natronomonas pharaonis (strain ATCC 35678 / DSM 2160) (Halobacterium pharaonis)
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 sitei45 – 451NucleophileUniRule 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

BioCyciNPHA348780:GJX0-1763-MONOMER.

Names & Taxonomyi

Protein namesi
Recommended name:
Proteasome subunit betaUniRule annotation (EC:3.4.25.1UniRule annotation)
Alternative name(s):
20S proteasome beta subunitUniRule annotation
Proteasome core protein PsmBUniRule annotation
Gene namesi
Name:psmBUniRule annotation
Ordered Locus Names:NP_3472A
OrganismiNatronomonas pharaonis (strain ATCC 35678 / DSM 2160) (Halobacterium pharaonis)
Taxonomic identifieri348780 [NCBI]
Taxonomic lineageiArchaeaEuryarchaeotaHalobacteriaHalobacterialesHalobacteriaceaeNatronomonas
ProteomesiUP000002698: 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 – 4444Removed in mature form; by autocatalysisUniRule annotationPRO_0000397384Add
BLAST
Chaini45 – 239195Proteasome subunit betaPRO_0000397385Add
BLAST

Keywords - PTMi

Autocatalytic cleavage, Zymogen

Proteomic databases

PRIDEiQ3IPX1.

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

STRINGi348780.NP3472A.

Structurei

3D structure databases

ProteinModelPortaliQ3IPX1.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the peptidase T1B family.UniRule annotation

Phylogenomic databases

eggNOGiCOG0638.
HOGENOMiHOG000091083.
KOiK03433.
OMAiIAPRIYC.

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.

Q3IPX1-1 [UniParc]FASTAAdd to Basket

« Hide

        10         20         30         40         50
MRQPDSSLPR TGQDHTLSPY EPELGEVPSN DLSMADLDNV NKTGTTTIGI
60 70 80 90 100
STAEGVVIAT DMRASLGGRF VSNKNVQKVE QIHPSAALTL VGSVGGAQSF
110 120 130 140 150
IRSLRAEVDL YEARRGEDIS INALATLAGN FARGGPFFAI NPILGGVDDE
160 170 180 190 200
GHHVYSIDPA GGVMKDDYTV TGSGLTVAYG TLEREYEDDM TNEEAKRVAA
210 220 230
SGIKAAVERD TGSGNGVFLA TVTDEDVEIK GHKDFDEVL
Length:239
Mass (Da):25,318
Last modified:November 8, 2005 - v1
Checksum:i66FDAE4F09F47A16
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CR936257 Genomic DNA. Translation: CAI49827.1.
RefSeqiYP_327382.1. NC_007426.1.

Genome annotation databases

EnsemblBacteriaiCAI49827; CAI49827; NP_3472A.
GeneIDi3703062.
KEGGinph:NP3472A.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CR936257 Genomic DNA. Translation: CAI49827.1 .
RefSeqi YP_327382.1. NC_007426.1.

3D structure databases

ProteinModelPortali Q3IPX1.
ModBasei Search...
MobiDBi Search...

Protein-protein interaction databases

STRINGi 348780.NP3472A.

Proteomic databases

PRIDEi Q3IPX1.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

EnsemblBacteriai CAI49827 ; CAI49827 ; NP_3472A .
GeneIDi 3703062.
KEGGi nph:NP3472A.

Phylogenomic databases

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

Enzyme and pathway databases

BioCyci NPHA348780:GJX0-1763-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.
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. "Living with two extremes: conclusions from the genome sequence of Natronomonas pharaonis."
    Falb M., Pfeiffer F., Palm P., Rodewald K., Hickmann V., Tittor J., Oesterhelt D.
    Genome Res. 15:1336-1343(2005) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: ATCC 35678 / DSM 2160.

Entry informationi

Entry nameiPSB_NATPD
AccessioniPrimary (citable) accession number: Q3IPX1
Entry historyi
Integrated into UniProtKB/Swiss-Prot: August 10, 2010
Last sequence update: November 8, 2005
Last modified: October 29, 2014
This is version 65 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, 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