UniProtKB/Swiss-Prot Q6ZWL3: Variant p.Glu79Asp

Cytochrome P450 4V2
Gene: CYP4V2
Chromosomal location: 4q35.2
Variant information

Variant position:  79
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 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 Glutamate (E) to Aspartate (D) at position 79 (E79D, p.Glu79Asp).
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 acidic.
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:  Bietti crystalline corneoretinal dystrophy (BCD) [MIM:210370]: An autosomal recessive ocular disease characterized by retinal degeneration and marginal corneal dystrophy. Typical features include multiple glistening intraretinal crystals scattered over the fundus, a characteristic degeneration of the retina, and sclerosis of the choroidal vessels, ultimately resulting in progressive night blindness and constriction of the visual field. Most patients have similar crystals at the corneoscleral limbus. Patients develop decreased vision, nyctalopia, and paracentral scotomata between the 2nd and 4th decade of life. Later, they develop peripheral visual field loss and marked visual impairment, usually progressing to legal blindness by the 5th or 6th decade of life. {ECO:0000269|PubMed:15042513, ECO:0000269|PubMed:22772592}. 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 BCD.
Any additional useful information about the variant.



Sequence information

Variant position:  79
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  525
The length of the canonical sequence.

Location on the sequence:   LVGHALLMKPDGREFFQQII  E YTEEYRHMPLLKLWVGPVPM
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                         LVGHALLMKPDGREFFQQIIEYTEEYRHMPLLKLWVGPVPM

Mouse                         LVGHALYMKPNNAEFFQQLIYYTEEFRHLPIIKLWIGPVPL

Rat                           LVGHALFMKPNNTEFFQQIIQYTEEFRHLPIIKLWIGPVPL

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 – 525 Cytochrome P450 4V2


Literature citations

Bietti crystalline corneoretinal dystrophy is caused by mutations in the novel gene CYP4V2.
Li A.; Jiao X.; Munier F.L.; Schorderet D.F.; Yao W.; Iwata F.; Hayakawa M.; Kanai A.; Shy Chen M.; Alan Lewis R.; Heckenlively J.; Weleber R.G.; Traboulsi E.I.; Zhang Q.; Xiao X.; Kaiser-Kupfer M.; Sergeev Y.V.; Hejtmancik J.F.;
Am. J. Hum. Genet. 74:817-826(2004)
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1); TISSUE SPECIFICITY; VARIANTS BCD ARG-44; SER-61; ASP-79; THR-111; VAL-123; LYS-259; PRO-331; PRO-341 AND HIS-508;

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.