UniProtKB/Swiss-Prot P12883: Variant p.Arg403Trp

Myosin-7
Gene: MYH7
Chromosomal location: 14q12
Variant information

Variant position:  403
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  Disease [Disclaimer]
The variants are classified into three categories: Disease, Polymorphism and Unclassified.
  • Disease: Variants have been found in patients and disease-association is reported in literature. However, this classification is not a definitive assessment of variant pathogenicity.
  • Polymorphism: No disease-association has been reported.
  • Unclassified: Variants have been found in patients but disease-association remains unclear.

Residue change:  From Arginine (R) to Tryptophan (W) at position 403 (R403W, p.Arg403Trp).
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 large size and basic (R) to large size and aromatic (W)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  -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:  In CMH1.
Any additional useful information about the variant.

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



Sequence information

Variant position:  403
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  1935
The length of the canonical sequence.

Location on the sequence:   KSAYLMGLNSADLLKGLCHP  R VKVGNEYVTKGQNVQQVIYA
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                         KSAYLMGLNSADLLKGLCHPRVKVGNEYVTKGQNVQQVIYA

Mouse                         KSAYLMGLNSADLLKGLCHPRVKVGNEYVTKGQNVQQVSYA

Rat                           KSAYLMGLNSADLLKGLCHPRVKVGNEYVTKGQNVQQVAYA

Pig                           KSAYLMGLNSADLLKGLCHPRVKVGNEYVTKGQNVQQVMYA

Bovine                        KSAYLMGLNSADLLKGLCHPRVKVGNEYVTKGQNVQQVVYA

Dog                           KSAYLMGLNSADLLKGLCHPRVKVGNEYVTKGQNVQQVAYA

Horse                         KSAYLMGLNSADLLKGLCHPRVKVGNEYVTKGQNVQQVAYA

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 1 – 1935 Myosin-7
Domain 85 – 778 Myosin motor


Literature citations

Identification of a new missense mutation at Arg403, a CpG mutation hotspot, in exon 13 of the beta-myosin heavy chain gene in hypertrophic cardiomyopathy.
Moolman J.C.; Brink P.A.; Corfield V.A.;
Hum. Mol. Genet. 2:1731-1732(1993)
Cited for: VARIANT CMH1 TRP-403;

Familial hypertrophic cardiomyopathy. Microsatellite haplotyping and identification of a hot spot for mutations in the beta-myosin heavy chain gene.
Dausse E.; Komajda M.; Fetler L.; Dubourg O.; Dufour C.; Carrier L.; Wisnewsky C.; Bercovici J.; Hengstenberg C.; Al-Mahdawi S.;
J. Clin. Invest. 92:2807-2813(1993)
Cited for: VARIANTS CMH1 LEU-403 AND TRP-403;

The origins of hypertrophic cardiomyopathy-causing mutations in two South African subpopulations: a unique profile of both independent and founder events.
Moolman-Smook J.C.; De Lange W.J.; Bruwer E.C.D.; Brink P.A.; Corfield V.A.;
Am. J. Hum. Genet. 65:1308-1320(1999)
Cited for: VARIANTS CMH1 TRP-403; LYS-499; GLN-719 AND THR-797;

Hypertrophic cardiomyopathy: distribution of disease genes, spectrum of mutations, and implications for a molecular diagnosis strategy.
Richard P.; Charron P.; Carrier L.; Ledeuil C.; Cheav T.; Pichereau C.; Benaiche A.; Isnard R.; Dubourg O.; Burban M.; Gueffet J.-P.; Millaire A.; Desnos M.; Schwartz K.; Hainque B.; Komajda M.;
Circulation 107:2227-2232(2003)
Cited for: VARIANTS CMH1 MET-39; ASN-188; HIS-204; SER-232; GLN-249; THR-263; THR-355; LEU-403; GLN-403; TRP-403; VAL-428; THR-443; CYS-453; SER-479; LYS-483; MET-606; ILE-659; SER-663; HIS-663; CYS-671; ARG-716; GLN-719; TRP-719; CYS-723; GLU-733; ARG-741; ARG-768; GLU-778; HIS-787; THR-852; GLY-869; GLU-883 DEL; GLU-930 DEL; ARG-1135; GLN-1218; MET-1377; THR-1379; TRP-1382 AND THR-1777; VARIANT MET-1692;

Mutation spectrum in a large cohort of unrelated consecutive patients with hypertrophic cardiomyopathy.
Erdmann J.; Daehmlow S.; Wischke S.; Senyuva M.; Werner U.; Raible J.; Tanis N.; Dyachenko S.; Hummel M.; Hetzer R.; Regitz-Zagrosek V.;
Clin. Genet. 64:339-349(2003)
Cited for: VARIANTS CMH1 TRP-143; TRP-403; ILE-411; SER-584; HIS-694; TRP-719; THR-736; PHE-796; ILE-824; HIS-870; PHE-905; GLN-924 AND ASN-928;

Denaturing high performance liquid chromatography: high throughput mutation screening in familial hypertrophic cardiomyopathy and SNP genotyping in motor neurone disease.
Yu B.; Sawyer N.A.; Caramins M.; Yuan Z.G.; Saunderson R.B.; Pamphlett R.; Richmond D.R.; Jeremy R.W.; Trent R.J.;
J. Clin. Pathol. 58:479-485(2005)
Cited for: VARIANTS CMH1 VAL-227; GLY-328; GLU-351; GLN-403; TRP-403; ILE-411; THR-435; CYS-453; HIS-453; MET-606; CYS-663; GLN-719; TRP-719; HIS-787; GLY-894; VAL-908 AND LYS-927; VARIANT CYS-1519;

Prevalence of cardiac beta-myosin heavy chain gene mutations in patients with hypertrophic cardiomyopathy.
Perrot A.; Schmidt-Traub H.; Hoffmann B.; Prager M.; Bit-Avragim N.; Rudenko R.I.; Usupbaeva D.A.; Kabaeva Z.; Imanov B.; Mirrakhimov M.M.; Dietz R.; Wycisk A.; Tendera M.; Gessner R.; Osterziel K.J.;
J. Mol. Med. 83:468-477(2005)
Cited for: VARIANTS CMH1 LEU-211; TRP-403; CYS-453; CYS-501; ARG-576; THR-736; TRP-741; GLY-901; ASN-928; LYS-1356 AND THR-1454;

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.