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UniProtKB/Swiss-Prot P10916: Variant p.Arg58Gln

Myosin regulatory light chain 2, ventricular/cardiac muscle isoform
Gene: MYL2
Chromosomal location: 12q23-q24.3
Variant information

Variant position:  58
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 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 Arginine (R) to Glutamine (Q) at position 58 (R58Q, p.Arg58Gln).
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 medium size and polar (Q)
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

Involvement in disease:  Cardiomyopathy, familial hypertrophic 10 (CMH10) [MIM:608758]: A hereditary heart disorder characterized by ventricular hypertrophy, which is usually asymmetric and often involves the interventricular septum. The symptoms include dyspnea, syncope, collapse, palpitations, and chest pain. They can be readily provoked by exercise. The disorder has inter- and intrafamilial variability ranging from benign to malignant forms with high risk of cardiac failure and sudden cardiac death. Rarely, patients present a variant of familial hypertrophic cardiomyopathy, characterized by mid-left ventricular chamber thickening. {ECO:0000269|PubMed:11102452, ECO:0000269|PubMed:12404107, ECO:0000269|PubMed:12707239, ECO:0000269|PubMed:12818575, ECO:0000269|PubMed:8673105, ECO:0000269|PubMed:9535554}. Note=The disease is caused by mutations affecting the gene represented in this entry.
The name and a short description of the disease associated with the variant. For more information about the disease, the user can refer to OMIM, following the link provided after the disease acronym.

Variant description:  In CMH10; impairs calcium binding; bind calcium upon phosphorylation.
Any additional useful information about the variant.

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

Sequence information

Variant position:  58
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  166
The length of the canonical sequence.

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.






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.

Chain 2 – 166 Myosin regulatory light chain 2, ventricular/cardiac muscle isoform
Domain 24 – 59 EF-hand 1
Modified residue 52 – 52 Phosphothreonine

Literature citations

Identification of two novel mutations in the ventricular regulatory myosin light chain gene (MYL2) associated with familial and classical forms of hypertrophic cardiomyopathy.
Flavigny J.; Richard P.; Isnard R.; Carrier L.; Charron P.; Bonne G.; Forissier J.F.; Desnos M.; Dubourg O.; Komajda M.; Schwartz K.; Hainque B.;
J. Mol. Med. 76:208-214(1998)
Cited for: VARIANTS CMH10 LEU-18 AND GLN-58;

Familial hypertrophic cardiomyopathy mutations in the regulatory light chains of myosin affect their structure, Ca2+ binding, and phosphorylation.
Szczesna D.; Ghosh D.; Li Q.; Gomes A.V.; Guzman G.; Arana C.; Zhi G.; Stull J.T.; Potter J.D.;
J. Biol. Chem. 276:7086-7092(2001)

Systematic analysis of the regulatory and essential myosin light chain genes: genetic variants and mutations in hypertrophic cardiomyopathy.
Kabaeva Z.T.; Perrot A.; Wolter B.; Dietz R.; Cardim N.; Correia J.M.; Schulte H.D.; Aldashev A.A.; Mirrakhimov M.M.; Osterziel K.J.;
Eur. J. Hum. Genet. 10:741-748(2002)
Cited for: VARIANTS CMH10 LYS-22 AND GLN-58;

Identification of the genotypes causing hypertrophic cardiomyopathy in northern Sweden.
Moerner S.; Richard P.; Kazzam E.; Hellman U.; Hainque B.; Schwartz K.; Waldenstroem A.;
J. Mol. Cell. Cardiol. 35:841-849(2003)
Cited for: VARIANT CMH10 GLN-58;

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.