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UniProtKB/Swiss-Prot P23942: Variant p.Tyr141Cys

Peripherin-2
Gene: PRPH2
Chromosomal location: 6p21.2-cen
Variant information

Variant position:  141
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 Tyrosine (Y) to Cysteine (C) at position 141 (Y141C, p.Tyr141Cys).
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 aromatic (Y) to medium size and polar (C)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  -2
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:  Macular dystrophy, vitelliform, 3 (VMD3) [MIM:608161]: A form of vitelliform macular dystrophy, a retinal disease characterized by yellow, lipofuscin-containing deposits, usually localized at the center of the macula. Patients usually become symptomatic in the fourth or fifth decade of life with a protracted disease of decreased visual acuity. {ECO:0000269|PubMed:15370544, ECO:0000269|PubMed:17653047, ECO:0000269|PubMed:20213611, ECO:0000269|PubMed:26796962, ECO:0000269|PubMed:9338584}. 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.

Involvement in disease:  Retinitis pigmentosa 7 (RP7) [MIM:608133]: A retinal dystrophy belonging to the group of pigmentary retinopathies. Retinitis pigmentosa is characterized by retinal pigment deposits visible on fundus examination and primary loss of rod photoreceptor cells followed by secondary loss of cone photoreceptors. Patients typically have night vision blindness and loss of midperipheral visual field. As their condition progresses, they lose their far peripheral visual field and eventually central vision as well. {ECO:0000269|PubMed:10627133, ECO:0000269|PubMed:11485765, ECO:0000269|PubMed:1427912, ECO:0000269|PubMed:16799052, ECO:0000269|PubMed:1684223, ECO:0000269|PubMed:1749427, ECO:0000269|PubMed:19038374, ECO:0000269|PubMed:22334370, ECO:0000269|PubMed:26796962, ECO:0000269|PubMed:7862413, ECO:0000269|PubMed:8020945}. 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 RP7 and VMD3.
Any additional useful information about the variant.



Sequence information

Variant position:  141
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  346
The length of the canonical sequence.

Location on the sequence:   LLRGSLENTLGQGLKNGMKY  Y RDTDTPGRCFMKKTIDMLQI
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                         LLRGSLENTLGQGLKNGMKYYRDTDTPGRCFMKKTIDMLQI

                              LMRGSLESTLAHGLKNGMKYYRDTDTPGRCFMKKTIDMLQI

Mouse                         LLRGSLESTLAYGLKNGMKYYRDTDTPGRCFMKKTIDMLQI

Rat                           LLRGSLESTLAYGLKNGMKYYRDTDTPGRCFMKKTIDMLQI

Bovine                        LLRGSLESTLAHGLKNGMKFYRDTDTPGRCFMKKTIDMLQI

Cat                           LMRGSLESTLAQGLKNGMKYYRDTDTPGRCFMKKTIDLLQI

Chicken                       LMRGSLESTLAQGLKNSMKFYRDTDTPGRCFMKKTIDMLQI

Xenopus laevis                LTRGSLESTLAHGLKNGMRYYKDTDIPGRCFLKKTIDLLQI

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 – 346 Peripherin-2
Topological domain 124 – 264 Lumenal


Literature citations

A novel RDS/peripherin gene mutation associated with diverse macular phenotypes.
Yang Z.; Li Y.; Jiang L.; Karan G.; Moshfeghi D.; O'Connor S.; Li X.; Yu Z.; Lewis H.; Zack D.; Jacobson S.; Zhang K.;
Ophthalmic Genet. 25:133-145(2004)
Cited for: VARIANT VMD3 CYS-141;

Prevalence of disease-causing mutations in families with autosomal dominant retinitis pigmentosa: a screen of known genes in 200 families.
Sullivan L.S.; Bowne S.J.; Birch D.G.; Hughbanks-Wheaton D.; Heckenlively J.R.; Lewis R.A.; Garcia C.A.; Ruiz R.S.; Blanton S.H.; Northrup H.; Gire A.I.; Seaman R.; Duzkale H.; Spellicy C.J.; Zhu J.; Shankar S.P.; Daiger S.P.;
Invest. Ophthalmol. Vis. Sci. 47:3052-3064(2006)
Cited for: VARIANT SER-137; VARIANTS RP7 CYS-141; ARG-198 AND ARG-216;

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.