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Entry version 98 (26 Feb 2020)
Sequence version 1 (24 May 2005)
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Protein

DNA mismatch repair protein Msh2

Gene

msh2

Organism
Dictyostelium discoideum (Slime mold)
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>
-Protein inferred from homologyi <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

Component of the post-replicative DNA mismatch repair system (MMR). Forms two different heterodimers: MutS alpha (msh2-msh6 heterodimer) and MutS beta (msh2-msh3 heterodimer) which binds to DNA mismatches thereby initiating DNA repair. When bound, heterodimers bend the DNA helix. MutS alpha recognizes single base mismatches and dinucleotide insertion-deletion loops (IDL) in the DNA. MutS beta recognizes larger insertion-deletion loops. After mismatch binding, MutS alpha or beta forms a ternary complex with the MutL alpha heterodimer, which is thought to be responsible for directing the downstream MMR events, including strand discrimination, excision, and resynthesis. ATP binding and hydrolysis play a pivotal role in mismatch repair functions. The ATPase activity associated with MutS alpha regulates binding similar to a molecular switch: mismatched DNA provokes ADP-->ATP exchange, resulting in a discernible conformational transition that converts MutS alpha into a sliding clamp capable of hydrolysis-independent diffusion along the DNA backbone. This transition is crucial for mismatch repair. MutS alpha may also play a role in DNA homologous recombination repair (By similarity).By similarity

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes a region in the protein which binds nucleotide phosphates. It always involves more than one amino acid and includes all residues involved in nucleotide-binding.<p><a href='/help/np_bind' target='_top'>More...</a></p>Nucleotide bindingi707 – 714ATPSequence analysis8

<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>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>Keywordsi

Molecular functionDNA-binding
Biological processCell cycle, DNA damage, DNA repair
LigandATP-binding, Nucleotide-binding

Enzyme and pathway databases

Reactome - a knowledgebase of biological pathways and processes

More...
Reactomei
R-DDI-5358565 Mismatch repair (MMR) directed by MSH2:MSH6 (MutSalpha)
R-DDI-5358606 Mismatch repair (MMR) directed by MSH2:MSH3 (MutSbeta)

<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:
DNA mismatch repair protein Msh2
Alternative name(s):
MutS protein homolog 2
<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:msh2
ORF Names:DDB_G0275809
<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>OrganismiDictyostelium discoideum (Slime mold)
<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 identifieri44689 [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 lineageiEukaryotaAmoebozoaEvoseaEumycetozoaDictyosteliaDictyostelialesDictyosteliaceaeDictyostelium
<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
  • UP000002195 <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> Componentsi: Chromosome 2, Unassembled WGS sequence

Organism-specific databases

Dictyostelium discoideum online informatics resource

More...
dictyBasei
DDB_G0275809 msh2

<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

GO - Cellular componenti

Keywords - Cellular componenti

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_00003282381 – 937DNA mismatch repair protein Msh2Add BLAST937

Proteomic databases

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

More...
PaxDbi
Q553L4

PRoteomics IDEntifications database

More...
PRIDEi
Q553L4

<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

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction%5Fsection">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Heterodimer consisting of msh2-msh6 (MutS alpha) or msh2-msh3 (MutS beta). Both heterodimers form a ternary complex with MutL alpha (mlh1-pms1).

Interacts with exo1 (By similarity).

By similarity

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
44689.DDB0229897

<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
Q553L4

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

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni635 – 709Interaction with exo1By similarityAdd BLAST75

Compositional bias

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes the position of regions of compositional bias within the protein and the particular amino acids that are over-represented within those regions.<p><a href='/help/compbias' target='_top'>More...</a></p>Compositional biasi97 – 101Poly-Gln5

<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 DNA mismatch repair MutS family.Curated

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG0219 Eukaryota
COG0249 LUCA

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_002472_10_0_1

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q553L4

KEGG Orthology (KO)

More...
KOi
K08735

Identification of Orthologs from Complete Genome Data

More...
OMAi
ALDNHEF

Database for complete collections of gene phylogenies

More...
PhylomeDBi
Q553L4

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.30.420.110, 1 hit
3.40.1170.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR011184 DNA_mismatch_repair_Msh2
IPR000432 DNA_mismatch_repair_MutS_C
IPR007861 DNA_mismatch_repair_MutS_clamp
IPR007696 DNA_mismatch_repair_MutS_core
IPR016151 DNA_mismatch_repair_MutS_N
IPR036187 DNA_mismatch_repair_MutS_sf
IPR007860 DNA_mmatch_repair_MutS_con_dom
IPR032642 Msh2
IPR036678 MutS_con_dom_sf
IPR027417 P-loop_NTPase

The PANTHER Classification System

More...
PANTHERi
PTHR11361:SF35 PTHR11361:SF35, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF05188 MutS_II, 1 hit
PF05192 MutS_III, 1 hit
PF05190 MutS_IV, 1 hit
PF00488 MutS_V, 1 hit

PIRSF; a whole-protein classification database

More...
PIRSFi
PIRSF005813 MSH2, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00534 MUTSac, 1 hit
SM00533 MUTSd, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF48334 SSF48334, 1 hit
SSF52540 SSF52540, 1 hit
SSF53150 SSF53150, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00486 DNA_MISMATCH_REPAIR_2, 1 hit

<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.

Q553L4-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MSDNEQEESS QVVLKEDKTF VTFFQSLVSS NEDTDTIRLF DRKGYYSIHG
60 70 80 90 100
EDAVFVAMMH FKSKKSLKYW SISDPNPKKK IKIDNDGSLT TTASSSQQQQ
110 120 130 140 150
QELGLAVLTI RQGYEFENIV KELLDEKKKI EIWSMKPNSK QQWELIKKGS
160 170 180 190 200
PGNTQMFEDV LLNGNCEGSV MMALKVTREK GSIVFGISFG DATFKTIGVS
210 220 230 240 250
QFMDNDNLSN LSSFIMQMSV KECLLCCDQK NYDYQKVKEK LSDAGIPFTE
260 270 280 290 300
LPKSDFSSKN AEQDLTRLLG SVKNNLPDIE QEHAIQSASC LIKHLDLLSN
310 320 330 340 350
PNYFGKFKLE KYDLDRYMKL DSSSFKGLHI IDLKDSSVSA AAGGGGAGGA
360 370 380 390 400
SSSSNKDQSL YNLLNQCNTP MGSRLLLQWV KQPLLNAEEI EARLNFVEAF
410 420 430 440 450
YNDLELRQSL RSNDLKKIGD LDRLSKKLHG QKATLEDCVN LYGIVTRLPV
460 470 480 490 500
VLQSLNNHSS IHQELIKVNF IESLESIISD FAKFCAMVEK TIDLDLANDK
510 520 530 540 550
HEYVIRSSFD ETLRGIQLKK DQISNKIERF RVDIADDLNL DEAKVKLHYS
560 570 580 590 600
EKDMFLLRIS RKDEVAIRDK KKYIVHATAK DGVRFATREI DTLNEAYKKW
610 620 630 640 650
SAEYLDKQDG LAKRTLQIAA SFVPLIEDLS SLIATLDVFV TLSHVSSIAP
660 670 680 690 700
IPFIRPEIIP LGSDENGAGT VIIGGRHPCV EIQDNVNFIA NDIDLTRGQS
710 720 730 740 750
QFQIITGPNM GGKSTFIRQV GLIVLMAQIG CFVPAQKATI AVVDCILSRV
760 770 780 790 800
GAGDSQLRGV STFMAEMLET SYILKVATKN SLIIIDELGR GTSTYDGFGL
810 820 830 840 850
AWGIAEYICN QIGGFCLFAT HFHELTILSD LLPMVKNLHV SASTQNNTFT
860 870 880 890 900
LLYKVEQGPC DQSFGIHVAI LANFPSQVIE NAKQKAKELE SFESNTLKQN
910 920 930
HNKFLEEFKE INFNSNDVEK SLSLVNSLLN KYSIDIN
Length:937
Mass (Da):104,962
Last modified:May 24, 2005 - 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:i2D24BB8DB9370EA1
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
AAFI02000013 Genomic DNA Translation: EAL69655.1

NCBI Reference Sequences

More...
RefSeqi
XP_643399.1, XM_638307.1

Genome annotation databases

Ensembl protists genome annotation project

More...
EnsemblProtistsi
EAL69655; EAL69655; DDB_G0275809

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
8619985

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ddi:DDB_G0275809

<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
AAFI02000013 Genomic DNA Translation: EAL69655.1
RefSeqiXP_643399.1, XM_638307.1

3D structure databases

SMRiQ553L4
ModBaseiSearch...

Protein-protein interaction databases

STRINGi44689.DDB0229897

Proteomic databases

PaxDbiQ553L4
PRIDEiQ553L4

Genome annotation databases

EnsemblProtistsiEAL69655; EAL69655; DDB_G0275809
GeneIDi8619985
KEGGiddi:DDB_G0275809

Organism-specific databases

dictyBaseiDDB_G0275809 msh2

Phylogenomic databases

eggNOGiKOG0219 Eukaryota
COG0249 LUCA
HOGENOMiCLU_002472_10_0_1
InParanoidiQ553L4
KOiK08735
OMAiALDNHEF
PhylomeDBiQ553L4

Enzyme and pathway databases

ReactomeiR-DDI-5358565 Mismatch repair (MMR) directed by MSH2:MSH6 (MutSalpha)
R-DDI-5358606 Mismatch repair (MMR) directed by MSH2:MSH3 (MutSbeta)

Miscellaneous databases

Protein Ontology

More...
PROi
PR:Q553L4

Family and domain databases

Gene3Di3.30.420.110, 1 hit
3.40.1170.10, 1 hit
InterProiView protein in InterPro
IPR011184 DNA_mismatch_repair_Msh2
IPR000432 DNA_mismatch_repair_MutS_C
IPR007861 DNA_mismatch_repair_MutS_clamp
IPR007696 DNA_mismatch_repair_MutS_core
IPR016151 DNA_mismatch_repair_MutS_N
IPR036187 DNA_mismatch_repair_MutS_sf
IPR007860 DNA_mmatch_repair_MutS_con_dom
IPR032642 Msh2
IPR036678 MutS_con_dom_sf
IPR027417 P-loop_NTPase
PANTHERiPTHR11361:SF35 PTHR11361:SF35, 1 hit
PfamiView protein in Pfam
PF05188 MutS_II, 1 hit
PF05192 MutS_III, 1 hit
PF05190 MutS_IV, 1 hit
PF00488 MutS_V, 1 hit
PIRSFiPIRSF005813 MSH2, 1 hit
SMARTiView protein in SMART
SM00534 MUTSac, 1 hit
SM00533 MUTSd, 1 hit
SUPFAMiSSF48334 SSF48334, 1 hit
SSF52540 SSF52540, 1 hit
SSF53150 SSF53150, 1 hit
PROSITEiView protein in PROSITE
PS00486 DNA_MISMATCH_REPAIR_2, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

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 nameiMSH2_DICDI
<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: Q553L4
Secondary accession number(s): Q86HA1
<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: April 8, 2008
Last sequence update: May 24, 2005
Last modified: February 26, 2020
This is version 98 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)

<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. SIMILARITY comments
    Index of protein domains and families
  2. Dictyostelium discoideum
    Dictyostelium discoideum: entries, gene names and cross-references to dictyBase
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