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Protein

Probable proteasome subunit beta type-1

Gene

PRE3

Organism
Encephalitozoon cuniculi (strain GB-M1) (Microsporidian parasite)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at protein leveli

Functioni

The proteasome degrades poly-ubiquitinated proteins in the cytoplasm and in the nucleus. It is essential for the regulated turnover of proteins and for the removal of misfolded proteins. The proteasome is a multicatalytic proteinase complex that 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. It has an ATP-dependent proteolytic activity (By similarity).By similarity

Catalytic activityi

Cleavage of peptide bonds with very broad specificity.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Active sitei11 – 111NucleophileBy similarity

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Hydrolase, Protease, Threonine protease

Protein family/group databases

MEROPSiT01.010.

Names & Taxonomyi

Protein namesi
Recommended name:
Probable proteasome subunit beta type-1 (EC:3.4.25.1)
Alternative name(s):
26S proteasome beta-type subunit PRE3
Multicatalytic endopeptidase complex subunit PRE3
Gene namesi
Name:PRE3
Ordered Locus Names:ECU10_1450
OrganismiEncephalitozoon cuniculi (strain GB-M1) (Microsporidian parasite)
Taxonomic identifieri284813 [NCBI]
Taxonomic lineageiEukaryotaFungiMicrosporidiaUnikaryonidaeEncephalitozoon
ProteomesiUP000000819 Componenti: Chromosome X

Organism-specific databases

EuPathDBiMicrosporidiaDB:ECU10_1450.

Subcellular locationi

  • Cytoplasm PROSITE-ProRule annotation
  • Nucleus By similarity

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm, Nucleus, Proteasome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Propeptidei1 – 1010Removed in mature formBy similarityPRO_0000391408
Chaini11 – 203193Probable proteasome subunit beta type-1PRO_0000382760Add
BLAST

Expressioni

Developmental stagei

Expressed in late sporogonial stages.1 Publication

Interactioni

Subunit structurei

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).By similarity

Protein-protein interaction databases

STRINGi284813.NP_586260.1.

Structurei

3D structure databases

ProteinModelPortaliQ8SR11.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the peptidase T1B family.PROSITE-ProRule annotation

Phylogenomic databases

eggNOGiCOG0638.
HOGENOMiHOG000091079.
InParanoidiQ8SR11.
KOiK02738.
OMAiRIFCCMA.
OrthoDBiEOG7XDBSV.

Family and domain databases

Gene3Di3.60.20.10. 1 hit.
InterProiIPR029055. Ntn_hydrolases_N.
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.
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.

Q8SR11-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MMSNEKEMTG TTIIAIKYDD GVLIGADSRT SMGAYVSSRV TDKLTQITDK
60 70 80 90 100
IFVCRSGSSA DTQMISSYLR MYLSMYSQLE DSIPQVQRAA ALASKIIYEN
110 120 130 140 150
PSLLAGLIVA GYDDKPRVFN ISLGGSLTER DWAIGGSGSA FIYGYCDVNW
160 170 180 190 200
RSGMSLEEGI RFVRNAVSCA INRDNASGGC IRMSAISRTG VQRYFYPGDK

VLQ
Length:203
Mass (Da):22,189
Last modified:June 1, 2002 - v1
Checksum:iDC82D2EAD817DA3E
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AL590449 Genomic DNA. Translation: CAD25864.1.
RefSeqiNP_586260.1. NM_001042093.1.

Genome annotation databases

GeneIDi859910.
KEGGiecu:ECU10_1450.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AL590449 Genomic DNA. Translation: CAD25864.1.
RefSeqiNP_586260.1. NM_001042093.1.

3D structure databases

ProteinModelPortaliQ8SR11.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi284813.NP_586260.1.

Protein family/group databases

MEROPSiT01.010.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi859910.
KEGGiecu:ECU10_1450.

Organism-specific databases

EuPathDBiMicrosporidiaDB:ECU10_1450.

Phylogenomic databases

eggNOGiCOG0638.
HOGENOMiHOG000091079.
InParanoidiQ8SR11.
KOiK02738.
OMAiRIFCCMA.
OrthoDBiEOG7XDBSV.

Family and domain databases

Gene3Di3.60.20.10. 1 hit.
InterProiIPR029055. Ntn_hydrolases_N.
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.
PROSITEiPS00854. PROTEASOME_BETA_1. 1 hit.
PS51476. PROTEASOME_BETA_2. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: GB-M1.
  2. "Proteomic analysis of the eukaryotic parasite Encephalitozoon cuniculi (microsporidia): a reference map for proteins expressed in late sporogonial stages."
    Brosson D., Kuhn L., Delbac F., Garin J., Vivares C.P., Texier C.
    Proteomics 6:3625-3635(2006) [PubMed] [Europe PMC] [Abstract]
    Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS], DEVELOPMENTAL STAGE.

Entry informationi

Entry nameiPSB1_ENCCU
AccessioniPrimary (citable) accession number: Q8SR11
Entry historyi
Integrated into UniProtKB/Swiss-Prot: September 1, 2009
Last sequence update: June 1, 2002
Last modified: June 24, 2015
This is version 78 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programFungal 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

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.