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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P00395: Variant p.Leu196Ile

Cytochrome c oxidase subunit 1
Gene: MT-CO1
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Variant information Variant position: help 196 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 Leucine (L) to Isoleucine (I) at position 196 (L196I, p.Leu196Ile). 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 Similar physico-chemical property. Both residues are medium size and hydrophobic. 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 MT-C4D. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 196 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 513 The length of the canonical sequence.
Location on the sequence: help MTQYQTPLFVWSVLITAVLL L LSLPVLAAGITMLLTDRNLN 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                         MTQYQTPLFVWSVLITAVLLLLSLPVLAAGITMLLTDRNLN

                              MSQYQTPLFVWSVLITAVLLLLSLPVLAAGITMLLTDRNLN

Chimpanzee                    MTQYQTPLFVWSVLITAVLLLLSLPVLAAGITMLLTDRNLN

Mouse                         MTQYQTPLFVWSVLITAVLLLLSLPVLAAGITMLLTDRNLN

Rat                           MTQYQTPLFVWSVLITAVLLLLSLPVLAAGITMLLTDRNLN

Pig                           MSQYQTPLFVWSVLITAVLLLLSLPVLAAGITMLLTDRNLN

Bovine                        MSQYQTPLFVWSVMITAVLLLLSLPVLAAGITMLLTDRNLN

Rabbit                        MSQYQTPLFVWSVLITAVLLLLSLPVLAAGITMLLTDRNLN

Goat                          MSQYQTPLFVWSVLITAVLLLLSLPVLAAGITMLLTDRNLN

Sheep                         MSQYQTPLFVWSVLITAVLLLLSLPVLAAGITMLLTDRNLN

Cat                           MSQYQTPLFVWSVLITAVLLLLSLPVLAAGITMLLTDRNLN

Horse                         LSQYQTPLFVWSVLITAVLLLLALPVLAAGITMLLTDRNLN

Chicken                       LSQYQTPLFVWSVLITAILLLLSLPVLAAGITMLLTDRNLN

Xenopus laevis                MSQYQTPLFVWSVLITAVLLLLSLPVLAAGITMLLTDRNLN

Zebrafish                     ISQYQTPLFVWAVLVTAVLLLLSLPVLAAGITMLLTDRNLN

Caenorhabditis elegans        ISLEHMTLFVWTVFVTVFLLVLSLPVLAGAITMLLTDRNLN

Drosophila                    ISLDRMPLFVWSVVITALLLLLSLPVLAGAITMLLTDRNLN

Slime mold                    LSWSKVSLFVWSILITAVLLVLSLPVLAGGLTMLITDRNFE

Baker's yeast                 MTMHKLPLFVWSIFITAFLLLLSLPVLSAGITMLLLDRNFN

Fission yeast                 LSLYQMPLFAWAIMITSILLLLTLPVLAGGLFMLFSDRNLN

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 1 – 513 Cytochrome c oxidase subunit 1
Transmembrane 183 – 212 Helical; Name=V



Literature citations
Metabolic consequences of a novel missense mutation of the mtDNA CO I gene.
Varlamov D.A.; Kudin A.P.; Vielhaber S.; Schroeder R.; Sassen R.; Becker A.; Kunz D.; Haug K.; Rebstock J.; Heils A.; Elger C.E.; Kunz W.S.;
Hum. Mol. Genet. 11:1797-1805(2002)
Cited for: VARIANT MT-C4D ILE-196;
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.