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Protein

DNA mismatch repair protein Msh2

Gene

MSH2

Organism
Bos taurus (Bovine)
Status
Reviewed-Annotation score: -Experimental evidence at transcript leveli

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 and shields approximately 20 base pairs. MutS alpha recognizes single base mismatches and dinucleotide insertion-deletion loops (IDL) in the DNA. MutS beta recognizes larger insertion-deletion loops up to 13 nucleotides long. 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. In melanocytes may modulate both UV-B-induced cell cycle regulation and apoptosis (By similarity).By similarity

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi669 – 676ATPSequence analysis8

GO - Molecular functioni

GO - Biological processi

Keywordsi

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

Enzyme and pathway databases

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

Names & Taxonomyi

Protein namesi
Recommended name:
DNA mismatch repair protein Msh2
Alternative name(s):
MutS protein homolog 2
Gene namesi
Name:MSH2
OrganismiBos taurus (Bovine)
Taxonomic identifieri9913 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaLaurasiatheriaCetartiodactylaRuminantiaPecoraBovidaeBovinaeBos
Proteomesi
  • UP000009136 Componenti: Chromosome 11

Organism-specific databases

VGNCiVGNC:31693 MSH2

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte; Source: COMPARTMENTS

Keywords - Cellular componenti

Nucleus

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Initiator methionineiRemovedBy similarity
ChainiPRO_00001151812 – 934DNA mismatch repair protein Msh2Add BLAST933

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei2N-acetylalanineBy similarity1
Modified residuei555N6-acetyllysineBy similarity1
Modified residuei567N6-acetyllysineBy similarity1
Modified residuei921PhosphoserineBy similarity1

Keywords - PTMi

Acetylation, Phosphoprotein

Proteomic databases

PaxDbiQ3MHE4
PRIDEiQ3MHE4

Expressioni

Gene expression databases

BgeeiENSBTAG00000002742

Interactioni

Subunit structurei

Heterodimer consisting of MSH2-MSH6 (MutS alpha) or MSH2-MSH3 (MutS beta). Both heterodimer form a ternary complex with MutL alpha (MLH1-PMS1). Interacts with EXO1. Part of the BRCA1-associated genome surveillance complex (BASC), which contains BRCA1, MSH2, MSH6, MLH1, ATM, BLM, PMS2 and the RAD50-MRE11-NBS1 protein complex. This association could be a dynamic process changing throughout the cell cycle and within subnuclear domains. Interacts with ATR. Interacts with SLX4/BTBD12; this interaction is direct and links MutS beta to SLX4, a subunit of different structure-specific endonucleases (By similarity).By similarity

GO - Molecular functioni

Protein-protein interaction databases

STRINGi9913.ENSBTAP00000003556

Structurei

3D structure databases

ProteinModelPortaliQ3MHE4
SMRiQ3MHE4
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni601 – 671Interaction with EXO1By similarityAdd BLAST71

Sequence similaritiesi

Belongs to the DNA mismatch repair MutS family.Curated

Phylogenomic databases

eggNOGiKOG0219 Eukaryota
COG0249 LUCA
GeneTreeiENSGT00550000074867
HOGENOMiHOG000196498
HOVERGENiHBG006399
InParanoidiQ3MHE4
KOiK08735
OMAiGDFYTAH
OrthoDBiEOG091G03SA
TreeFamiTF351780

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
IPR007695 DNA_mismatch_repair_MutS-lik_N
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
PF01624 MutS_I, 1 hit
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
PROSITEiView protein in PROSITE
PS00486 DNA_MISMATCH_REPAIR_2, 1 hit

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

Q3MHE4-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MAVQPKDTLQ LDSAAEVGFV RFFQGMPEKP TTTVRLFDRG DFYTAHREDA
60 70 80 90 100
LLAAREVFKT QGVVKYMGPA GAKTLESVVL SKMNFESFVK DLLLVRQYRV
110 120 130 140 150
EVYKNRAGNK ASKENDWYLA FKASPGNLSQ FEDILFGNND MSASIGVVGV
160 170 180 190 200
KMSTVDGQRQ VGVGYVDSTQ RKLGLCEFPD NDQFSNLEAL LIQIGPKECV
210 220 230 240 250
MPGGETAGDM GKLRQVIQRG GILITERKRA DFSTKDIYQD LNRLLKGKKG
260 270 280 290 300
EQVNSAVLPE MENQVAVSSL SAVIKFLELL SDDSNFGQFE LTTFDFSQYM
310 320 330 340 350
KLDIAAVRAL NLFQGSVEDT SGSQSLAALL NKCKTPQGQR LVNQWIKQPL
360 370 380 390 400
MDKNRIEERL NLVEAFVEDA ELRQNLQEDL LRRFPDLNRL AKKFQRQAAN
410 420 430 440 450
LQDCYRLYQG INQLPNVIQA LEKYEGKHQA LFLAVFVTPL IDLRSDFSKF
460 470 480 490 500
QEMIETTLDM DQVENHEFLV KPSFDPNLSE LREIMDDLEK KMQSTLVSAA
510 520 530 540 550
RDLGLDPGKQ IKLDSSTQFG YYFRVTCKEE KVLRNNKNFS TVDIQKNGVK
560 570 580 590 600
FTNSKLTSLN EEYTKNKTEY EEAQNAIVKE IVNISSGYVE PMQTLNDVLA
610 620 630 640 650
QLDAVVSFAH VSDAAPVPYV RPVILEKGRG RITLKASRHA CVEVQDEVAF
660 670 680 690 700
IPNDVHFEKD KQMFHIITGP NMGGKSTYIR QTGVVVLMAQ IGCFVPCEWA
710 720 730 740 750
EVSIVDCILA RVGAGDSQLK GVSTFMAEML ETASILRSAT KDSLIIIDEL
760 770 780 790 800
GRGTSTYDGF GLAWAISEYI ATKIGAFCMF ATHFHELTAL ANQIPTVNNL
810 820 830 840 850
HVTALTTEET LTMLYQVKKG VCDQSFGIHV AELANFPRHV IECAKQKALE
860 870 880 890 900
LEEFQNIGKP QECDEMEPAA KRCYLEREQG EKIIQEFLSK VKQVPFTEMS
910 920 930
EESITRKLKQ LKAEVIAKNN SFVNEIISRI KVTA
Length:934
Mass (Da):104,922
Last modified:October 25, 2005 - v1
Checksum:iB10C540F741C8832
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BC105268 mRNA Translation: AAI05269.1
RefSeqiNP_001029756.1, NM_001034584.1
UniGeneiBt.635

Genome annotation databases

EnsembliENSBTAT00000003556; ENSBTAP00000003556; ENSBTAG00000002742
GeneIDi533115
KEGGibta:533115

Similar proteinsi

Entry informationi

Entry nameiMSH2_BOVIN
AccessioniPrimary (citable) accession number: Q3MHE4
Entry historyiIntegrated into UniProtKB/Swiss-Prot: January 24, 2006
Last sequence update: October 25, 2005
Last modified: March 28, 2018
This is version 85 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

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