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UniProtKB/Swiss-Prot Q9H251: Variant p.Arg3189Trp

Cadherin-23
Gene: CDH23
Variant information

Variant position:  3189
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 Tryptophan (W) at position 3189 (R3189W, p.Arg3189Trp).
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

Involvement in disease:  Usher syndrome 1D (USH1D) [MIM:601067]: USH is a genetically heterogeneous condition characterized by the association of retinitis pigmentosa with sensorineural deafness. Age at onset and differences in auditory and vestibular function distinguish Usher syndrome type 1 (USH1), Usher syndrome type 2 (USH2) and Usher syndrome type 3 (USH3). USH1 is characterized by profound congenital sensorineural deafness, absent vestibular function and prepubertal onset of progressive retinitis pigmentosa leading to blindness. {ECO:0000269|PubMed:11138009, ECO:0000269|PubMed:12075507, ECO:0000269|PubMed:15660226, ECO:0000269|PubMed:16679490, ECO:0000269|PubMed:18429043}. 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:  Usher syndrome 1D/F (USH1DF) [MIM:601067]: USH1DF patients are heterozygous for mutations in CDH23 and PCDH15, indicating a digenic inheritance pattern. {ECO:0000269|PubMed:15537665}. Note=The disease is caused by mutations affecting distinct genetic loci, including 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 USH1D and USH1DF.
Any additional useful information about the variant.

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



Sequence information

Variant position:  3189
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  3354
The length of the canonical sequence.

Location on the sequence:   THGTFGREPAAVKPDDDRYL  R AAIQEYDNIAKLGQIIREGP
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                         THGTFGREPAAVKPDDDRYLRAAIQEYDNIAKLGQIIREGP

Mouse                         THGTFGREPAAVKPDDDRYLRAAIQEYDNIAKLGQIIREGP

Rat                           THGTFGREPAAVKPEDDRYLRAAIQEYDNIAKLGQIIREGP

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 24 – 3354 Cadherin-23
Topological domain 3086 – 3354 Cytoplasmic
Alternative sequence 531 – 3354 Missing. In isoform 5.
Alternative sequence 1213 – 3354 Missing. In isoform 6.
Helix 3187 – 3198


Literature citations

Characterization of Usher syndrome type I gene mutations in an Usher syndrome patient population.
Ouyang X.M.; Yan D.; Du L.L.; Hejtmancik J.F.; Jacobson S.G.; Nance W.E.; Li A.R.; Angeli S.; Kaiser M.; Newton V.; Brown S.D.M.; Balkany T.; Liu X.Z.;
Hum. Genet. 116:292-299(2005)
Cited for: VARIANTS USH1D THR-366; ALA-1209; GLN-1507; TRP-3189 AND PHE-3245;

Digenic inheritance of deafness caused by mutations in genes encoding cadherin 23 and protocadherin 15 in mice and humans.
Zheng Q.Y.; Yan D.; Ouyang X.M.; Du L.L.; Yu H.; Chang B.; Johnson K.R.; Liu X.Z.;
Hum. Mol. Genet. 14:103-111(2005)
Cited for: VARIANT USH1DF TRP-3189;

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.