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Q86A21 (PSB1_DICDI) Reviewed, UniProtKB/Swiss-Prot

Last modified April 16, 2014. Version 72. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (3) | 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 type-1

EC=3.4.25.1
Gene names
Name:psmB1
ORF Names:DDB_G0272969
OrganismDictyostelium discoideum (Slime mold) [Reference proteome]
Taxonomic identifier44689 [NCBI]
Taxonomic lineageEukaryotaAmoebozoaMycetozoaDictyosteliidaDictyostelium

Protein attributes

Sequence length236 AA.
Sequence statusComplete.
Protein existenceInferred from homology

General annotation (Comments)

Function

The proteasome is a multicatalytic proteinase complex which is characterized by its ability to cleave peptides with Arg, Phe, Tyr, Leu, and Glu adjacent to the leaving group at neutral or slightly basic pH. The proteasome has an ATP-dependent proteolytic activity By similarity.

Catalytic activity

Cleavage of peptide bonds with very broad specificity.

Subunit structure

The 26S proteasome consists of a 20S proteasome core and two 19S regulatory subunits. The 20S proteasome core is composed of 28 subunits that are arranged in four stacked rings, resulting in a barrel-shaped structure. The two end rings are each formed by seven alpha subunits, and the two central rings are each formed by seven beta subunits. The catalytic chamber with the active sites is on the inside of the barrel By similarity.

Subcellular location

Cytoplasm By similarity. Nucleus By similarity.

Sequence similarities

Belongs to the peptidase T1B family.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 236236Proteasome subunit beta type-1
PRO_0000328481

Sequences

Sequence LengthMass (Da)Tools
Q86A21 [UniParc].

Last modified June 1, 2003. Version 1.
Checksum: F5BC59291CA38DE2

FASTA23626,380
        10         20         30         40         50         60 
METLKLSALP EKDKQQPISH GRFEAYVDNG GTVLAVAGKD YCVIAGDTRM SDGGYGIQTR 

        70         80         90        100        110        120 
KYTKIFQLTK KCVLATSGMQ ADTIALQKRL KSMLESFEKE HGKPMSTPAI AQFLSNTLYY 

       130        140        150        160        170        180 
KRFFPYYTFN LVAGVDEQGE GWIWTYDAVG SHERVKYSSQ GSGNQLVIPL LDNQVAKFNQ 

       190        200        210        220        230 
QIVEGNKDVS CEQVVSFVKD SITSAGERDI YTGDFADIVV VDKNGVHWEK FELKLD 

« Hide

References

[1]"Sequence and analysis of chromosome 2 of Dictyostelium discoideum."
Gloeckner G., Eichinger L., Szafranski K., Pachebat J.A., Bankier A.T., Dear P.H., Lehmann R., Baumgart C., Parra G., Abril J.F., Guigo R., Kumpf K., Tunggal B., Cox E.C., Quail M.A., Platzer M., Rosenthal A., Noegel A.A.
Nature 418:79-85(2002) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: AX4.
[2]"The genome of the social amoeba Dictyostelium discoideum."
Eichinger L., Pachebat J.A., Gloeckner G., Rajandream M.A., Sucgang R., Berriman M., Song J., Olsen R., Szafranski K., Xu Q., Tunggal B., Kummerfeld S., Madera M., Konfortov B.A., Rivero F., Bankier A.T., Lehmann R., Hamlin N. expand/collapse author list , Davies R., Gaudet P., Fey P., Pilcher K., Chen G., Saunders D., Sodergren E.J., Davis P., Kerhornou A., Nie X., Hall N., Anjard C., Hemphill L., Bason N., Farbrother P., Desany B., Just E., Morio T., Rost R., Churcher C.M., Cooper J., Haydock S., van Driessche N., Cronin A., Goodhead I., Muzny D.M., Mourier T., Pain A., Lu M., Harper D., Lindsay R., Hauser H., James K.D., Quiles M., Madan Babu M., Saito T., Buchrieser C., Wardroper A., Felder M., Thangavelu M., Johnson D., Knights A., Loulseged H., Mungall K.L., Oliver K., Price C., Quail M.A., Urushihara H., Hernandez J., Rabbinowitsch E., Steffen D., Sanders M., Ma J., Kohara Y., Sharp S., Simmonds M.N., Spiegler S., Tivey A., Sugano S., White B., Walker D., Woodward J.R., Winckler T., Tanaka Y., Shaulsky G., Schleicher M., Weinstock G.M., Rosenthal A., Cox E.C., Chisholm R.L., Gibbs R.A., Loomis W.F., Platzer M., Kay R.R., Williams J.G., Dear P.H., Noegel A.A., Barrell B.G., Kuspa A.
Nature 435:43-57(2005) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: AX4.
+Additional computationally mapped references.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
AAFI02000008 Genomic DNA. Translation: EAS66954.1.

3D structure databases

ProteinModelPortalQ86A21.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING44689.DDB_0232957.

Proteomic databases

PRIDEQ86A21.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblProtistsDDB0232957; DDB0232957; DDB_G0272969.
KEGGddi:DDB_G0272969.

Organism-specific databases

dictyBaseDDB_G0272969. psmB1.

Phylogenomic databases

eggNOGCOG0638.
KOK02732.
OMARDYSKIC.
PhylomeDBQ86A21.
ProtClustDBCLSZ2733551.

Family and domain databases

InterProIPR016050. Proteasome_bsu_CS.
IPR001353. Proteasome_sua/b.
IPR023333. Proteasome_suB-type.
[Graphical view]
PfamPF00227. Proteasome. 1 hit.
[Graphical view]
PROSITEPS00854. PROTEASOME_BETA_1. 1 hit.
PS51476. PROTEASOME_BETA_2. 1 hit.
[Graphical view]
ProtoNetSearch...

Other

PROQ86A21.

Entry information

Entry namePSB1_DICDI
AccessionPrimary (citable) accession number: Q86A21
Secondary accession number(s): Q1ZXN1
Entry history
Integrated into UniProtKB/Swiss-Prot: April 8, 2008
Last sequence update: June 1, 2003
Last modified: April 16, 2014
This is version 72 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)

Relevant documents

SIMILARITY comments

Index of protein domains and families

Peptidase families

Classification of peptidase families and list of entries

Dictyostelium discoideum

Dictyostelium discoideum: entries, gene names and cross-references to dictyBase