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UniProtKB/Swiss-Prot Q16878: Variant p.Thr45Ile

Cysteine dioxygenase type 1
Gene: CDO1
Variant information

Variant position:  45
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  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:  From Threonine (T) to Isoleucine (I) at position 45 (T45I, p.Thr45Ile).
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 medium size and polar (T) to medium size and hydrophobic (I)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  -1
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:  
Links to websites of interest for the variant.



Sequence information

Variant position:  45
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  200
The length of the canonical sequence.

Location on the sequence:   GDEVNVEEVQAIMEAYESDP  T EWAMYAKFDQYRYTRNLVDQ
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                         GDEVNVEEVQAIMEAYESDPTEWAMYAKFDQYRYTRNLVDQ

Mouse                         GDEVNVEEVQAVLEAYESNPAEWALYAKFDQYRYTRNLVDQ

Rat                           GDEVNVEEVQAVLEAYESNPAEWALYAKFDQYRYTRNLVDQ

Bovine                        GEEINVEEVQAVMEAYESNPAEWAVYAKFDQYRYTRNLVDQ

Zebrafish                     SDSINVEEVQNLMESYQSNPQDWMKFAKFDQYRYTRNLVDE

Caenorhabditis elegans        QKLIDVDEVMKLMASYKSNANEWRRFAIFDMNKYTRNLVDV

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 – 200 Cysteine dioxygenase type 1
Mutagenesis 60 – 60 R -> Q. Reduces enzyme activity by 70%. Reduces iron and zinc incorporation by 50%.
Helix 44 – 47


Literature citations

Human cysteine dioxygenase type I: primary structure derived from base sequencing of cDNA.
McCann K.P.; Akbari M.T.; Williams A.C.; Ramsden D.B.;
Biochim. Biophys. Acta 1209:107-110(1994)
Cited for: NUCLEOTIDE SEQUENCE [MRNA]; VARIANT ILE-45;

Human cysteine dioxygenase type I (CDO-I; EC 1.13.11.20): 5' flanking region and intron-exon structure of the gene.
Ramsden D.B.; Kapadi A.L.; Fitch N.J.; Farmer M.J.; Bennett P.; Williams A.C.;
Mol. Pathol. 50:269-271(1997)
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA]; VARIANT ILE-45;

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.