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UniProtKB/Swiss-Prot P16499: Variant p.Gly850Val

Rod cGMP-specific 3',5'-cyclic phosphodiesterase subunit alpha
Gene: PDE6A
Variant information Variant position: help 850 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help LB/B The variants are classified into three categories: LP/P, LB/B and US.
  • LP/P: likely pathogenic or pathogenic.
  • LB/B: likely benign or benign.
  • US: uncertain significance

Residue change: help From Glycine (G) to Valine (V) at position 850 (G850V, p.Gly850Val). 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: help Change from glycine (G) to medium size and hydrophobic (V) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -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

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

Sequence information Variant position: help 850 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 860 The length of the canonical sequence.
Location on the sequence: help QQSAKSAAAGNQPGGNPSPG G ATTSKSCCIQ 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: help The multiple alignment of the region surrounding the variant against various orthologous sequences.



Sequence annotation in neighborhood: help 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.
Chain 2 – 857 Rod cGMP-specific 3',5'-cyclic phosphodiesterase subunit alpha
Region 821 – 860 Disordered
Compositional bias 832 – 860 Polar residues
Modified residue 857 – 857 Cysteine methyl ester
Lipidation 857 – 857 S-farnesyl cysteine

Literature citations
Frequency of mutations in the gene encoding the alpha subunit of rod cGMP-phosphodiesterase in autosomal recessive retinitis pigmentosa.
Dryja T.P.; Rucinski D.E.; Chen S.H.; Berson E.L.;
Invest. Ophthalmol. Vis. Sci. 40:1859-1865(1999)
Cited for: VARIANTS RP43 HIS-102; SER-102; LYS-569 AND PRO-573; VARIANTS SER-216; ALA-277; LEU-293; MET-391; GLN-827 AND VAL-850;
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.