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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P51687: Variant p.Ser427Tyr

Sulfite oxidase, mitochondrial
Gene: SUOX
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Variant information Variant position: help 427 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help LP/P [Disclaimer] 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 Serine (S) to Tyrosine (Y) at position 427 (S427Y, p.Ser427Tyr). 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 small size and polar (S) to large size and aromatic (Y) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -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
Variant description: help In ISOD. Any additional useful information about the variant.


Sequence information Variant position: help 427 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 545 The length of the canonical sequence.
Location on the sequence: help VDWETVDFDSAPSIQELPVQ S AITEPRDGETVESGEVTIKG 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. 
Human                         VDWETVDFDSAPSIQELPVQSAITEPRDGETV----ESGEVTIKG

Mouse                         VDWDTVNFDLAPSIQELPIQSAITQPQDGAIV----ESGEV

Rat                           VDWDTVDFDLAPSIQELPIQSAITQPQDGTTV----ESGEV

Chicken                       VDWDTVDYRTAPAIQELPVQSAVTQPRPGAAV----PPGEL

Drosophila                    TDWDTVDFSKSDAIQAMPVTSAICTPQPGARVKVDDDEGHI
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.
TypePositionsDescription
Chain 80 – 545 Sulfite oxidase, mitochondrial
Region 402 – 538 Homodimerization



Literature citations
Molecular basis of sulfite oxidase deficiency from the structure of sulfite oxidase.
Kisker C.; Schindelin H.; Pacheco A.; Wehbi W.A.; Garrett R.M.; Rajagopalan K.V.; Enemark J.H.; Rees D.C.;
Cell 91:973-983(1997)
Cited for: VARIANTS ISOD GLN-217; ASP-265; TYR-427 AND ASP-530; Isolated sulfite oxidase deficiency: review of two cases in one family.
Edwards M.C.; Johnson J.L.; Marriage B.; Graf T.N.; Coyne K.E.; Rajagopalan K.V.; MacDonald I.M.;
Ophthalmology 106:1957-1961(1999)
Cited for: VARIANTS ISOD ASP-265 AND TYR-427;
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.