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Entry version 69 (10 Feb 2021)
Sequence version 1 (10 Aug 2010)
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Protein

Polyubiquitin

Gene

ubi4

Organism
Schizosaccharomyces pombe (strain 972 / ATCC 24843) (Fission yeast)
Status
Reviewed-Annotation score:

Annotation score:4 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

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, and DNA-damage responses. 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).

By similarity

Miscellaneous

For the sake of clarity sequence features are annotated only for the first chain, and are not repeated for each of the following chains.
Ubiquitin is encoded by 5 different genes. Ubi1 and ubi2 are synthesized as a polyprotein with one copy of ubiquitin fused to ribosomal protein L40. Ubi3 and ubi5 are polyproteins with one copy of ubiquitin fused to ribosomal proteins S27a and s27b respectively. Ubi4 is a polyprotein containing 5 exact head to tail repeats of ubiquitin.

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

GO - Biological processi

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Polyubiquitin
Cleaved into the following chain:
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: 'Name', 'Synonyms', 'Ordered locus names' and 'ORF names'.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:ubi4
ORF Names:SPBC337.08c
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiSchizosaccharomyces pombe (strain 972 / ATCC 24843) (Fission yeast)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the 'taxonomic identifier' or 'taxid'.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri284812 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryotaFungiDikaryaAscomycotaTaphrinomycotinaSchizosaccharomycetesSchizosaccharomycetalesSchizosaccharomycetaceaeSchizosaccharomyces
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000002485 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">proteome</a> can consist of several components.<br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome II

Organism-specific databases

Schizosaccharomyces pombe database

More...
PomBasei
SPBC337.08c, ubi4

Eukaryotic Pathogen, Vector and Host Database Resources

More...
VEuPathDBi
FungiDB:SPBC337.08c

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywords - Cellular componenti

Cytoplasm, Nucleus

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00003963001 – 76UbiquitinAdd BLAST76
ChainiPRO_000039630177 – 152UbiquitinAdd BLAST76
ChainiPRO_0000396302153 – 228UbiquitinAdd BLAST76
ChainiPRO_0000396303229 – 304UbiquitinAdd BLAST76
ChainiPRO_0000396304305 – 380UbiquitinAdd BLAST76
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM / Processing</a> section describes a propeptide, which is a part of a protein that is cleaved during maturation or activation. Once cleaved, a propeptide generally has no independent biological function.<p><a href='/help/propep' target='_top'>More...</a></p>PropeptideiPRO_0000396305381 – 3822

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM / Processing</a> section describes <strong>covalent linkages</strong> of various types formed <strong>between two proteins (interchain cross-links)</strong> or <strong>between two parts of the same protein (intrachain cross-links)</strong>, except the disulfide bonds that are annotated in the <a href="http://www.uniprot.org/manual/disulfid">'Disulfide bond'</a> subsection.<p><a href='/help/crosslnk' target='_top'>More...</a></p>Cross-linki6Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin)
Cross-linki11Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin)
Cross-linki27Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin)
Cross-linki29Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin)By similarity
Cross-linki33Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin)
Cross-linki48Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin)By similarity
Cross-linki63Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin)By similarity
Cross-linki76Glycyl lysine isopeptide (Gly-Lys) (interchain with K-? in acceptor proteins)PROSITE-ProRule annotation

Keywords - PTMi

Isopeptide bond, Ubl conjugation

Proteomic databases

MaxQB - The MaxQuant DataBase

More...
MaxQBi
P0CG72

PaxDb, a database of protein abundance averages across all three domains of life

More...
PaxDbi
P0CG72

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...
iPTMneti
P0CG72

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

GO - Molecular functioni

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...
BioGRIDi
277545, 21 interactors

STRING: functional protein association networks

More...
STRINGi
4896.SPBC337.08c.1

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...
SMRi
P0CG72

Database of comparative protein structure models

More...
ModBasei
Search...

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family%5Fand%5Fdomains%5Fsection">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini1 – 76Ubiquitin-like 1PROSITE-ProRule annotationAdd BLAST76
Domaini77 – 152Ubiquitin-like 2PROSITE-ProRule annotationAdd BLAST76
Domaini153 – 228Ubiquitin-like 3PROSITE-ProRule annotationAdd BLAST76
Domaini229 – 304Ubiquitin-like 4PROSITE-ProRule annotationAdd BLAST76
Domaini305 – 380Ubiquitin-like 5PROSITE-ProRule annotationAdd BLAST76

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the ubiquitin family.Curated

Keywords - Domaini

Repeat

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG0001, Eukaryota

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_010412_7_0_1

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P0CG72

Identification of Orthologs from Complete Genome Data

More...
OMAi
NVKAWIQ

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P0CG72

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR000626, Ubiquitin-like_dom
IPR029071, Ubiquitin-like_domsf
IPR019954, Ubiquitin_CS
IPR019956, Ubiquitin_dom

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00240, ubiquitin, 5 hits

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00348, UBIQUITIN

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00213, UBQ, 5 hits

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF54236, SSF54236, 5 hits

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00299, UBIQUITIN_1, 5 hits
PS50053, UBIQUITIN_2, 5 hits

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is in its mature form or if it represents the precursor.<p><a href='/help/sequence_processing' target='_top'>More...</a></p>Sequence processingi: The displayed sequence is further processed into a mature form.

P0CG72-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MQIFVKTLTG KTITLEVESS DTIDNVKSKI QDKEGIPPDQ QRLIFAGKQL
60 70 80 90 100
EDGRTLSDYN IQKESTLHLV LRLRGGMQIF VKTLTGKTIT LEVESSDTID
110 120 130 140 150
NVKSKIQDKE GIPPDQQRLI FAGKQLEDGR TLSDYNIQKE STLHLVLRLR
160 170 180 190 200
GGMQIFVKTL TGKTITLEVE SSDTIDNVKS KIQDKEGIPP DQQRLIFAGK
210 220 230 240 250
QLEDGRTLSD YNIQKESTLH LVLRLRGGMQ IFVKTLTGKT ITLEVESSDT
260 270 280 290 300
IDNVKSKIQD KEGIPPDQQR LIFAGKQLED GRTLSDYNIQ KESTLHLVLR
310 320 330 340 350
LRGGMQIFVK TLTGKTITLE VESSDTIDNV KSKIQDKEGI PPDQQRLIFA
360 370 380
GKQLEDGRTL SDYNIQKEST LHLVLRLRGG LF
Length:382
Mass (Da):42,972
Last modified:August 10, 2010 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:i8FEBA6235F9909A2
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
CU329671 Genomic DNA Translation: CAA21278.1

NCBI Reference Sequences

More...
RefSeqi
NP_595409.1, NM_001021316.2

Genome annotation databases

Ensembl fungal genome annotation project

More...
EnsemblFungii
SPBC337.08c.1; SPBC337.08c.1:pep; SPBC337.08c

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
2541030

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
spo:SPBC337.08c

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CU329671 Genomic DNA Translation: CAA21278.1
RefSeqiNP_595409.1, NM_001021316.2

3D structure databases

SMRiP0CG72
ModBaseiSearch...

Protein-protein interaction databases

BioGRIDi277545, 21 interactors
STRINGi4896.SPBC337.08c.1

PTM databases

iPTMnetiP0CG72

Proteomic databases

MaxQBiP0CG72
PaxDbiP0CG72

Genome annotation databases

EnsemblFungiiSPBC337.08c.1; SPBC337.08c.1:pep; SPBC337.08c
GeneIDi2541030
KEGGispo:SPBC337.08c

Organism-specific databases

PomBaseiSPBC337.08c, ubi4
VEuPathDBiFungiDB:SPBC337.08c

Phylogenomic databases

eggNOGiKOG0001, Eukaryota
HOGENOMiCLU_010412_7_0_1
InParanoidiP0CG72
OMAiNVKAWIQ
PhylomeDBiP0CG72

Miscellaneous databases

Protein Ontology

More...
PROi
PR:P0CG72

Family and domain databases

InterProiView protein in InterPro
IPR000626, Ubiquitin-like_dom
IPR029071, Ubiquitin-like_domsf
IPR019954, Ubiquitin_CS
IPR019956, Ubiquitin_dom
PfamiView protein in Pfam
PF00240, ubiquitin, 5 hits
PRINTSiPR00348, UBIQUITIN
SMARTiView protein in SMART
SM00213, UBQ, 5 hits
SUPFAMiSSF54236, SSF54236, 5 hits
PROSITEiView protein in PROSITE
PS00299, UBIQUITIN_1, 5 hits
PS50053, UBIQUITIN_2, 5 hits

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiUBI4P_SCHPO
<p>This subsection of the 'Entry information' section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called 'Primary (citable) accession number'.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P0CG72
Secondary accession number(s): O13697
, O14257, P0C014, Q76PD0, Q9HDZ4
<p>This subsection of the 'Entry information' section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification ('Last modified'). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: August 10, 2010
Last sequence update: August 10, 2010
Last modified: February 10, 2021
This is version 69 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the 'Entry information' section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programFungal Protein Annotation Program

<p>This section contains any relevant information that doesn't fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

Reference proteome

Documents

  1. Schizosaccharomyces pombe
    Schizosaccharomyces pombe: entries and gene names
  2. SIMILARITY comments
    Index of protein domains and families
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