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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P43246: Variant p.Asp506Tyr

DNA mismatch repair protein Msh2
Gene: MSH2
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Variant information Variant position: help 506 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help LP/P [Disclaimer] The variants are classified into three categories: LP/P, LB/B and US.
  • LP/P: likely pathogenic or pathogenic.
  • LB/B: likely benign or benign.
  • US: uncertain significance
Residue change: help From Aspartate (D) to Tyrosine (Y) at position 506 (D506Y, p.Asp506Tyr). 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: help Change from medium size and acidic (D) to large size and aromatic (Y) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -3 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: help In LYNCH1 and CRC; sporadic early-onset CRC; decreased mismatch repair activity. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 506 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 934 The length of the canonical sequence.
Location on the sequence: help NDLEKKMQSTLISAARDLGL D PGKQIKLDSSAQFGYYFRVT 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: help The multiple alignment of the region surrounding the variant against various orthologous sequences. 
Human                         NDLEKKMQSTLISAARDLGLDPGKQIKLDSSAQFGYYFRVT

Mouse                         DGLEKKMQSTLINAARGLGLDPGKQIKLDSSAQFGYYFRVT

Rat                           DGLEKKMQSTLISAARGLGLDPGKQIKLDSSAQFGYYFRVT

Bovine                        DDLEKKMQSTLVSAARDLGLDPGKQIKLDSSTQFGYYFRVT

Drosophila                    TELYSKMEELQFKCSQELNLDGKNQVKLESVAKLGHHFRIT

Slime mold                    DQISNKIERFRVDIADDLNLDEAK-VKLHYSEKDMFLLRIS

Baker's yeast                 DTLRDEIHSIHLDSAEDLGFDPDKKLKLENHHLHGWCMRLT

Fission yeast                 DELQHSIFEEHKRVGSDLHQDTEKKLHLEQHHLYGWCLRLT
Sequence annotation in neighborhood: help 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



Literature citations
Germline mutations of hMLH1 and hMSH2 genes in Korean hereditary nonpolyposis colorectal cancer.
Han H.-J.; Yuan Y.; Ku J.-L.; Oh J.-H.; Won Y.-J.; Kang K.J.; Kim K.Y.; Kim S.; Kim C.Y.; Kim J.-P.; Oh N.-G.; Lee K.H.; Choe K.J.; Nakamura Y.; Park J.-G.;
J. Natl. Cancer Inst. 88:1317-1319(1996)
Cited for: VARIANT LYNCH1 TYR-506; Germline mutations of hMLH1 and hMSH2 genes in patients with suspected hereditary nonpolyposis colorectal cancer and sporadic early-onset colorectal cancer.
Yuan Y.; Han H.-J.; Zheng S.; Park J.-G.;
Dis. Colon Rectum 41:434-440(1998)
Cited for: VARIANT CRC TYR-506; VARIANT LYNCH1 ILE-688; Mutator phenotypes of common polymorphisms and missense mutations in MSH2.
Drotschmann K.; Clark A.B.; Kunkel T.A.;
Curr. Biol. 9:907-910(1999)
Cited for: CHARACTERIZATION OF VARIANTS ASP-322; PHE-390; LYS-419; TYR-506; PRO-524; LEU-622 AND PHE-697; 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 LYNCH1 LEU-440 DEL; TYR-506; ARG-629 AND ILE-688;
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.