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Q58634 (PSB_METJA) Reviewed, UniProtKB/Swiss-Prot

Last modified July 9, 2014. Version 95. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (4) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Proteasome subunit beta

EC=3.4.25.1
Alternative name(s):
20S proteasome beta subunit
Proteasome core protein PsmB
Gene names
Name:psmB
Ordered Locus Names:MJ1237
OrganismMethanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440) (Methanococcus jannaschii) [Reference proteome] [HAMAP]
Taxonomic identifier243232 [NCBI]
Taxonomic lineageArchaeaEuryarchaeotaMethanococciMethanococcalesMethanocaldococcaceaeMethanocaldococcus

Protein attributes

Sequence length224 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceEvidence at protein level

General annotation (Comments)

Function

Component of the proteasome core, a large protease complex with broad specificity involved in protein degradation. The M.jannaschii proteasome is able to cleave oligopeptides after Glu, Asp, Tyr, Phe, Trp, slightly after Arg, but not after Ala. Thus, displays caspase-like and chymotrypsin-like activities and low level of trypsin-like activity. Ref.2

Catalytic activity

Cleavage of peptide bonds with very broad specificity. Ref.2

Enzyme regulation

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. HAMAP-Rule MF_02113

Subunit structure

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. Ref.2 Ref.3

Subcellular location

Cytoplasm By similarity HAMAP-Rule MF_02113.

Sequence similarities

Belongs to the peptidase T1B family.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Propeptide1 – 66Removed in mature form; by autocatalysis By similarity
PRO_0000026661
Chain7 – 224218Proteasome subunit beta HAMAP-Rule MF_02113
PRO_0000026662

Sites

Active site71Nucleophile By similarity

Secondary structure

........................ 224
Helix Strand Turn

Details...

Sequences

Sequence LengthMass (Da)Tools
Q58634 [UniParc].

Last modified November 1, 1997. Version 1.
Checksum: 45B2A0D1EAEF7A58

FASTA22424,285
        10         20         30         40         50         60 
MDVMKGTTTV GLICDDAVIL ATDKRASLGN LVADKEAKKL YKIDDYIAMT IAGSVGDAQA 

        70         80         90        100        110        120 
IVRLLIAEAK LYKMRTGRNI PPLACATLLS NILHSSRMFP FLTQIIIGGY DLLEGAKLFS 

       130        140        150        160        170        180 
LDPLGGMNEE KTFTATGSGS PIAYGVLEAG YDRDMSVEEG IKLALNALKS AMERDTFSGN 

       190        200        210        220 
GISLAVITKD GVKIFEDEEI EKILDSMKAK PKKKTTKRSR RKSK 

« Hide

References

« Hide 'large scale' references
[1]"Complete genome sequence of the methanogenic archaeon, Methanococcus jannaschii."
Bult C.J., White O., Olsen G.J., Zhou L., Fleischmann R.D., Sutton G.G., Blake J.A., FitzGerald L.M., Clayton R.A., Gocayne J.D., Kerlavage A.R., Dougherty B.A., Tomb J.-F., Adams M.D., Reich C.I., Overbeek R., Kirkness E.F., Weinstock K.G. expand/collapse author list , Merrick J.M., Glodek A., Scott J.L., Geoghagen N.S.M., Weidman J.F., Fuhrmann J.L., Nguyen D., Utterback T.R., Kelley J.M., Peterson J.D., Sadow P.W., Hanna M.C., Cotton M.D., Roberts K.M., Hurst M.A., Kaine B.P., Borodovsky M., Klenk H.-P., Fraser C.M., Smith H.O., Woese C.R., Venter J.C.
Science 273:1058-1073(1996) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440.
[2]"Biochemical and physical properties of the Methanococcus jannaschii 20S proteasome and PAN, a homolog of the ATPase (Rpt) subunits of the eucaryal 26S proteasome."
Wilson H.L., Ou M.S., Aldrich H.C., Maupin-Furlow J.
J. Bacteriol. 182:1680-1692(2000) [PubMed] [Europe PMC] [Abstract]
Cited for: FUNCTION, CATALYTIC ACTIVITY, SUBUNIT, INTERACTION WITH PAN.
[3]"Structural insights into the regulatory particle of the proteasome from Methanocaldococcus jannaschii."
Zhang F., Hu M., Tian G., Zhang P., Finley D., Jeffrey P.D., Shi Y.
Mol. Cell 34:473-484(2009) [PubMed] [Europe PMC] [Abstract]
Cited for: X-RAY CRYSTALLOGRAPHY (4.1 ANGSTROMS) IN COMPLEX WITH ALPHA SUBUNIT, GATED STRUCTURE, SUBUNIT.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
L77117 Genomic DNA. Translation: AAB99241.1.
PIRD64454.
RefSeqNP_248232.1. NC_000909.1.

3D structure databases

PDBe
RCSB-PDB
PDBj
EntryMethodResolution (Å)ChainPositionsPDBsum
3H4PX-ray4.10a/b/c/d/e/f/g/h/i/j/k/l/m/n7-224[»]
ProteinModelPortalQ58634.
SMRQ58634. Positions 7-208.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING243232.MJ1237.

Protein family/group databases

MEROPST01.002.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaAAB99241; AAB99241; MJ_1237.
GeneID1452133.
KEGGmja:MJ_1237.

Phylogenomic databases

eggNOGCOG0638.
KOK03433.
OMAGYYIAHR.
PhylomeDBQ58634.

Family and domain databases

Gene3D3.60.20.10. 1 hit.
HAMAPMF_02113_A. Proteasome_B_A.
InterProIPR029055. 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]
PfamPF00227. Proteasome. 1 hit.
[Graphical view]
PRINTSPR00141. PROTEASOME.
SUPFAMSSF56235. SSF56235. 1 hit.
TIGRFAMsTIGR03634. arc_protsome_B. 1 hit.
PROSITEPS00854. PROTEASOME_BETA_1. 1 hit.
PS51476. PROTEASOME_BETA_2. 1 hit.
[Graphical view]
ProtoNetSearch...

Other

EvolutionaryTraceQ58634.

Entry information

Entry namePSB_METJA
AccessionPrimary (citable) accession number: Q58634
Entry history
Integrated into UniProtKB/Swiss-Prot: November 1, 1997
Last sequence update: November 1, 1997
Last modified: July 9, 2014
This is version 95 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families

Peptidase families

Classification of peptidase families and list of entries

PDB cross-references

Index of Protein Data Bank (PDB) cross-references

Methanococcus jannaschii

Methanococcus jannaschii: entries and gene names