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UniProtKB/Swiss-Prot O15078: Variant p.Trp7Cys

Centrosomal protein of 290 kDa
Gene: CEP290
Variant information

Variant position:  7
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 Tryptophan (W) to Cysteine (C) at position 7 (W7C, p.Trp7Cys).
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 (W) 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:  Senior-Loken syndrome 6 (SLSN6) [MIM:610189]: A renal-retinal disorder characterized by progressive wasting of the filtering unit of the kidney (nephronophthisis), with or without medullary cystic renal disease, and progressive eye disease. Typically this disorder becomes apparent during the first year of life. {ECO:0000269|PubMed:20683928}. 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:  Joubert syndrome 5 (JBTS5) [MIM:610188]: A disorder presenting with cerebellar ataxia, oculomotor apraxia, hypotonia, neonatal breathing abnormalities and psychomotor delay. Neuroradiologically, it is characterized by cerebellar vermian hypoplasia/aplasia, thickened and reoriented superior cerebellar peduncles, and an abnormally large interpeduncular fossa, giving the appearance of a molar tooth on transaxial slices (molar tooth sign). Additional variable features include retinal dystrophy and renal disease. Joubert syndrome type 5 shares the neurologic and neuroradiologic features of Joubert syndrome together with severe retinal dystrophy and/or progressive renal failure characterized by nephronophthisis. {ECO:0000269|PubMed:16682970, ECO:0000269|PubMed:16682973, ECO:0000269|PubMed:22425360, ECO:0000269|PubMed:26166481, ECO:0000269|PubMed:26477546}. 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 JBTS5 and SLSN6.
Any additional useful information about the variant.

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



Sequence information

Variant position:  7
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  2479
The length of the canonical sequence.

Location on the sequence:   MPPNIN  W KEIMKVDPDDLPRQEELADN
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                         MPPNINWKEIMKVDPDDLPRQEELADN

Mouse                         MPPNIKWKELIKVDPDDLPRQEELADK

Zebrafish                     MPAAADWRLLMGMDPEDLGDEDEKICD

Drosophila                    IPETVSLRKFRDFS----ARQKQELYE

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 – 2479 Centrosomal protein of 290 kDa
Region 1 – 695 Self-association (with itself or C-terminus)
Alternative sequence 1 – 940 Missing. In isoform 2.


Literature citations

Mutations in CEP290, which encodes a centrosomal protein, cause pleiotropic forms of Joubert syndrome.
Valente E.M.; Silhavy J.L.; Brancati F.; Barrano G.; Krishnaswami S.R.; Castori M.; Lancaster M.A.; Boltshauser E.; Boccone L.; Al-Gazali L.; Fazzi E.; Signorini S.; Louie C.M.; Bellacchio E.; Bertini E.; Dallapiccola B.; Gleeson J.G.;
Nat. Genet. 38:623-625(2006)
Cited for: VARIANT JBTS5 CYS-7;

Genetic screening of LCA in Belgium: predominance of CEP290 and identification of potential modifier alleles in AHI1 of CEP290-related phenotypes.
Coppieters F.; Casteels I.; Meire F.; De Jaegere S.; Hooghe S.; van Regemorter N.; Van Esch H.; Matuleviciene A.; Nunes L.; Meersschaut V.; Walraedt S.; Standaert L.; Coucke P.; Hoeben H.; Kroes H.Y.; Vande Walle J.; de Ravel T.; Leroy B.P.; De Baere E.;
Hum. Mutat. 31:E1709-E1766(2010)
Cited for: VARIANTS PRO-1566 AND PRO-1694; VARIANT SLSN6 CYS-7;

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.