UniProtKB/Swiss-Prot Q99959: Variant p.Val587Ile

Plakophilin-2
Gene: PKP2
Chromosomal location: 12p11
Variant information

Variant position:  587
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  Polymorphism
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 Valine (V) to Isoleucine (I) at position 587 (V587I, p.Val587Ile).
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:  Similar physico-chemical property. Both residues are medium size and hydrophobic.
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:  Associated with increased susceptibility to arrhythmogenic right ventricular cardiomyopathy.
Any additional useful information about the variant.

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



Sequence information

Variant position:  587
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  881
The length of the canonical sequence.

Location on the sequence:   SAGADGRKAMRRCDGLIDSL  V HYVRGTIADYQPDDKATENC
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.

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 – 881 Plakophilin-2
Repeat 571 – 616 ARM 4
Helix 582 – 595


Literature citations

Mutations in PKP2 gene involved in ARVC.
Rampazzo A.;
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2); VARIANTS SER-76; ASN-112 AND ILE-587;

Comprehensive desmosome mutation analysis in North Americans with arrhythmogenic right ventricular dysplasia/cardiomyopathy.
den Haan A.D.; Tan B.Y.; Zikusoka M.N.; Llado L.I.; Jain R.; Daly A.; Tichnell C.; James C.; Amat-Alarcon N.; Abraham T.; Russell S.D.; Bluemke D.A.; Calkins H.; Dalal D.; Judge D.P.;
Circ. Cardiovasc. Genet. 2:428-435(2009)
Cited for: VARIANTS ARVD9 PHE-140; SER-424 AND PHE-787; VARIANTS ASN-26; ILE-70; VAL-195; SER-276; PRO-366; PRO-372; MET-526; SER-531 AND ILE-587;

Missense variants in plakophilin-2 in arrhythmogenic right ventricular cardiomyopathy patients -- disease-causing or innocent bystanders?
Christensen A.H.; Benn M.; Tybjaerg-Hansen A.; Haunso S.; Svendsen J.H.;
Cardiology 115:148-154(2010)
Cited for: VARIANTS ASN-26; ASP-58; LYS-62; ILE-70; PHE-140; ALA-338; PRO-366; ARG-489; SER-531; ILE-587 AND VAL-673; DISCUSSION OF PATHOGENIC ROLE OF VARIANTS ASN-26; PHE-140 AND ILE-587;

Role of genetic testing in arrhythmogenic right ventricular cardiomyopathy/dysplasia.
Barahona-Dussault C.; Benito B.; Campuzano O.; Iglesias A.; Leung T.L.; Robb L.; Talajic M.; Brugada R.;
Clin. Genet. 77:37-48(2010)
Cited for: VARIANTS ARVD9 LYS-137; GLY-169 AND CYS-631; VARIANTS ILE-70; PRO-366 AND ILE-587;

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.