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P0CG51 (UBB_RAT) Reviewed, UniProtKB/Swiss-Prot

Last modified July 9, 2014. Version 24. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (1) | 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:
Polyubiquitin-B

Cleaved into the following chain:

  1. Ubiquitin
Gene names
Name:Ubb
OrganismRattus norvegicus (Rat) [Reference proteome]
Taxonomic identifier10116 [NCBI]
Taxonomic lineageEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaSciurognathiMuroideaMuridaeMurinaeRattus

Protein attributes

Sequence length305 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceEvidence at protein level

General annotation (Comments)

Function

Ubiquitin exists either covalently attached to another protein, or free (unanchored). When covalently bound, it is conjugated to target proteins via an isopeptide bond either as a monomer (monoubiquitin), a polymer linked via different Lys residues of the ubiquitin (polyubiquitin chains) or a linear polymer linked via the initiator Met of the ubiquitin (linear polyubiquitin chains). Polyubiquitin chains, when attached to a target protein, have different functions depending on the Lys residue of the ubiquitin that is linked: Lys-6-linked may be involved in DNA repair; Lys-11-linked is involved in ERAD (endoplasmic reticulum-associated degradation) and in cell-cycle regulation; Lys-29-linked is involved in lysosomal degradation; Lys-33-linked is involved in kinase modification; Lys-48-linked is involved in protein degradation via the proteasome; Lys-63-linked is involved in endocytosis, DNA-damage responses as well as in signaling processes leading to activation of the transcription factor NF-kappa-B. Linear polymer chains formed via attachment by the initiator Met lead to cell signaling. Ubiquitin is usually conjugated to Lys residues of target proteins, however, in rare cases, conjugation to Cys or Ser residues has been observed. When polyubiquitin is free (unanchored-polyubiquitin), it also has distinct roles, such as in activation of protein kinases, and in signaling By similarity.

Subcellular location

Cytoplasm By similarity. Nucleus By similarity.

Miscellaneous

Ubiquitin is encoded by 4 different genes. Uba52 and Rps27a genes code for a single copy of ubiquitin fused to the ribosomal proteins L40 and S27a, respectively. UBB and UBC genes code for a polyubiquitin precursor with exact head to tail repeats, the number of repeats differ between species and strains.

For the sake of clarity sequence features are annotated only for the first chain, and are not repeated for each of the following chains.

Sequence similarities

Belongs to the ubiquitin family.

Contains 4 ubiquitin-like domains.

Ontologies

Keywords
   Cellular componentCytoplasm
Nucleus
   DomainRepeat
   PTMIsopeptide bond
Ubl conjugation
   Technical termComplete proteome
Direct protein sequencing
Reference proteome
Gene Ontology (GO)
   Cellular_componentcytoplasm

Inferred from electronic annotation. Source: UniProtKB-SubCell

nucleus

Inferred from electronic annotation. Source: UniProtKB-SubCell

Complete GO annotation...

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 7676Ubiquitin
PRO_0000114806
Chain77 – 15276Ubiquitin
PRO_0000396238
Chain153 – 22876Ubiquitin
PRO_0000396239
Chain229 – 30476Ubiquitin
PRO_0000396240
Propeptide3051
PRO_0000396241

Regions

Domain1 – 7676Ubiquitin-like 1
Domain77 – 15276Ubiquitin-like 2
Domain153 – 22876Ubiquitin-like 3
Domain229 – 30476Ubiquitin-like 4

Sites

Binding site541Activating enzyme
Binding site721Activating enzyme
Site681Essential for function

Amino acid modifications

Cross-link6Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) By similarity
Cross-link11Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) By similarity
Cross-link27Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) By similarity
Cross-link29Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) By similarity
Cross-link33Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) By similarity
Cross-link48Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin)
Cross-link63Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) By similarity
Cross-link76Glycyl lysine isopeptide (Gly-Lys) (interchain with K-? in acceptor proteins)

Sequences

Sequence LengthMass (Da)Tools
P0CG51 [UniParc].

Last modified August 10, 2010. Version 1.
Checksum: 0B8C7878AE958E68

FASTA30534,369
        10         20         30         40         50         60 
MQIFVKTLTG KTITLEVEPS DTIENVKAKI QDKEGIPPDQ QRLIFAGKQL EDGRTLSDYN 

        70         80         90        100        110        120 
IQKESTLHLV LRLRGGMQIF VKTLTGKTIT LEVEPSDTIE NVKAKIQDKE GIPPDQQRLI 

       130        140        150        160        170        180 
FAGKQLEDGR TLSDYNIQKE STLHLVLRLR GGMQIFVKTL TGKTITLEVE PSDTIENVKA 

       190        200        210        220        230        240 
KIQDKEGIPP DQQRLIFAGK QLEDGRTLSD YNIQKESTLH LVLRLRGGMQ IFVKTLTGKT 

       250        260        270        280        290        300 
ITLEVEPSDT IENVKAKIQD KEGIPPDQQR LIFAGKQLED GRTLSDYNIQ KESTLHLVLR 


LRGGY 

« Hide

References

« Hide 'large scale' references
[1]"Nucleotide sequence and expression of the rat polyubiquitin mRNA."
Hayashi T., Noga M., Matsuda M.
Biochim. Biophys. Acta 1218:232-234(1994) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA].
Strain: Wistar.
Tissue: Brain cortex and Hippocampus.
[2]"The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)."
The MGC Project Team
Genome Res. 14:2121-2127(2004) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
Tissue: Heart and Pituitary.
[3]"Differential feeding-related regulation of ubiquitin and calbindin9kDa in rat duodenum."
Hubbard M.J., Carne A.
Biochim. Biophys. Acta 1200:191-196(1994) [PubMed] [Europe PMC] [Abstract]
Cited for: PROTEIN SEQUENCE OF 1-76.
Strain: Wistar.
Tissue: Duodenum.
[4]Lubec G., Diao W., Kang S.U.
Submitted (JUL-2007) to UniProtKB
Cited for: PROTEIN SEQUENCE OF 30-42 AND 55-72, IDENTIFICATION BY MASS SPECTROMETRY.
Strain: Sprague-Dawley.
Tissue: Brain and Hippocampus.
+Additional computationally mapped references.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
D16554 mRNA. Translation: BAA03983.1.
BC060312 mRNA. Translation: AAH60312.1.
BC070919 mRNA. Translation: AAH70919.1.
RefSeqNP_620250.1. NM_138895.1.
UniGeneRn.110618.
Rn.1253.

3D structure databases

ProteinModelPortalP0CG51.
SMRP0CG51. Positions 1-303.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

BioGrid251381. 3 interactions.

PTM databases

PhosphoSiteP0CG51.

Proteomic databases

PRIDEP0CG51.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

GeneID192255.
KEGGrno:192255.

Organism-specific databases

CTD7314.
RGD621562. Ubb.

Phylogenomic databases

KOK04551.

Family and domain databases

InterProIPR019956. Ubiquitin.
IPR000626. Ubiquitin-like.
IPR029071. Ubiquitin-rel_dom.
IPR019954. Ubiquitin_CS.
[Graphical view]
PfamPF00240. ubiquitin. 4 hits.
[Graphical view]
PRINTSPR00348. UBIQUITIN.
SMARTSM00213. UBQ. 4 hits.
[Graphical view]
SUPFAMSSF54236. SSF54236. 4 hits.
PROSITEPS00299. UBIQUITIN_1. 4 hits.
PS50053. UBIQUITIN_2. 4 hits.
[Graphical view]
ProtoNetSearch...

Other

NextBio622912.

Entry information

Entry nameUBB_RAT
AccessionPrimary (citable) accession number: P0CG51
Secondary accession number(s): P02248 expand/collapse secondary AC list , P02249, P02250, P62989, Q29120, Q63446, Q91887, Q91888
Entry history
Integrated into UniProtKB/Swiss-Prot: August 10, 2010
Last sequence update: August 10, 2010
Last modified: July 9, 2014
This is version 24 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families