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UniProtKB/Swiss-Prot P43246: Variant p.Gln629Arg

DNA mismatch repair protein Msh2
Gene: MSH2
Variant information

Variant position:  629
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  Unclassified
The variants are classified into three categories: Disease, Polymorphism and Unclassified.
  • Disease: Variants implicated in disease according to literature reports.
  • Polymorphism: Variants not reported to be implicated in disease.
  • Unclassified: Variants with uncertain implication in disease according to literature reports. Evidence against or in favor of a pathogenic role is limited and/or conflicting.

Residue change:  From Glutamine (Q) to Arginine (R) at position 629 (Q629R, p.Gln629Arg).
Indicates the amino acid change of the variant. The one-letter and three-letter codes for amino acids used in UniProtKB/Swiss-Prot are those adopted by the commission on Biochemical Nomenclature of the IUPAC-IUB.

Physico-chemical properties:  Change from medium size and polar (Q) to large size and basic (R)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  1
The score within a Blosum matrix for the corresponding wild-type to variant amino acid change. The log-odds score measures the logarithm for the ratio of the likelihood of two amino acids appearing by chance. The Blosum62 substitution matrix is used. This substitution matrix contains scores for all possible exchanges of one amino acid with another:
  • Lowest score: -4 (low probability of substitution).
  • Highest score: 11 (high probability of substitution).
More information can be found on the following page

Variant description:  In HNPCC1; unknown pathological significance.
Any additional useful information about the variant.

Other resources:  
Links to websites of interest for the variant.



Sequence information

Variant position:  629
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  934
The length of the canonical sequence.

Location on the sequence:   AHVSNGAPVPYVRPAILEKG  Q GRIILKASRHACVEVQDEIA
The residue change on the sequence. Unless the variant is located at the beginning or at the end of the protein sequence, both residues upstream (20) and downstream (20) of the variant will be shown.

Residue conservation: 
The multiple alignment of the region surrounding the variant against various orthologous sequences.

Human                         AHVSNGAPVPYVRPAIL-----EKGQG------------------------------RIILKASRHACVEVQDEIA

Mouse                         AHVSNAAPVPYVRPVIL-----EKGKG--------------

Rat                           AHVSNAAPVPYVRPVIL-----EKGKG--------------

Bovine                        AHVSDAAPVPYVRPVIL-----EKGRG--------------

Drosophila                    AIAARSAPTPYVRPKML-----EEGAR--------------

Slime mold                    SHVSSIAPIPFIRPEIIPLGSDENGAG--------------

Baker's yeast                 AHTSSYAPIPYIRPKLHP----MDSER--------------

Fission yeast                 AHASTVAVIPYVRPNIVDSSIAQEKHGQSSNILDIVSLEDT

Sequence annotation in neighborhood:  
The regions or sites of interest surrounding the variant. In general the features listed are posttranslational modifications, binding sites, enzyme active sites, local secondary structure or other characteristics reported in the cited references. The "Sequence annotation in neighborhood" lines have a fixed format:
  • Type: the type of sequence feature.
  • Positions: endpoints of the sequence feature.
  • Description: contains additional information about the feature.

TypePositionsDescription
Chain 2 – 934 DNA mismatch repair protein Msh2
Region 601 – 671 Interaction with EXO1


Literature citations

hMLH1 and hMSH2 mutations in families with familial clustering of gastric cancer and hereditary non-polyposis colorectal cancer.
Kim J.C.; Kim H.C.; Roh S.A.; Koo K.H.; Lee D.H.; Yu C.S.; Lee J.H.; Kim T.W.; Lee H.I.; Beck N.E.; Bodmer W.F.;
Cancer Detect. Prev. 25:503-510(2001)
Cited for: VARIANTS GASTRIC CANCER PHE-17; GLU-824; ALA-868; GLY-870 AND GLY-873; VARIANTS HNPCC1 CYS-98; TYR-323; ILE-335; ARG-629 AND VAL-714;

Oncogenic pathway of sporadic colorectal cancer with novel germline missense mutations in the hMSH2 gene.
Yamada K.; Zhong X.; Kanazawa S.; Koike J.; Tsujita K.; Hemmi H.;
Oncol. Rep. 10:859-866(2003)
Cited for: VARIANTS CRC SER-40; VAL-169; ARG-203; PHE-390; LYS-419; CYS-619 AND ARG-629; VARIANT MET-8;

Germline mutations in MLH1, MSH2 and MSH6 in Korean hereditary non-polyposis colorectal cancer families.
Shin Y.-K.; Heo S.-C.; Shin J.-H.; Hong S.-H.; Ku J.-L.; Yoo B.-C.; Kim I.-J.; Park J.-G.;
Hum. Mutat. 24:351-351(2004)
Cited for: VARIANTS HNPCC1 LEU-440 DEL; TYR-506; ARG-629 AND ILE-688;

Genetic characterization of Chinese hereditary non-polyposis colorectal cancer by DHPLC and multiplex PCR.
Yuan Y.; Huang Y.-Q.; Cai S.-R.; Song Y.-M.; Zheng S.; Zhang S.-Z.;
Jpn. J. Clin. Oncol. 34:660-666(2004)
Cited for: VARIANT HNPCC1 ARG-839; VARIANT ARG-629;

Clinical and molecular characteristics of hereditary non-polyposis colorectal cancer families in Southeast Asia.
Lee S.-C.; Guo J.-Y.; Lim R.; Soo R.; Koay E.; Salto-Tellez M.; Leong A.; Goh B.-C.;
Clin. Genet. 68:137-145(2005)
Cited for: VARIANTS HNPCC1 VAL-169; PHE-390; ALA-564 AND ARG-629; VARIANT CRC LYS-419;

Disclaimer: Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. They are not in any way intended to be used as a substitute for professional medical advice, diagnostic, treatment or care.