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UniProtKB/Swiss-Prot P03923: Variant p.Ala72Val

NADH-ubiquinone oxidoreductase chain 6
Gene: MT-ND6
Variant information

Variant position:  72
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  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:  From Alanine (A) to Valine (V) at position 72 (A72V, p.Ala72Val).
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 small size and hydrophobic (A) to medium size and hydrophobic (V)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  0
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:  In LDYT; most severe mutation with no vision recovery.
Any additional useful information about the variant.

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



Sequence information

Variant position:  72
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  174
The length of the canonical sequence.

Location on the sequence:   GLMVFLIYLGGMMVVFGYTT  A MAIEEYPEAWGSGVEVLVSV
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                         GLMVFLIYLGGMMVVFGYTTAMAIEEYPEAWGSGVEVLVSV

Gorilla                       GLMVFLIYLGGMMVVFGYTTAMAIGEYPEAWGSGVEVLVSV

Chimpanzee                    GLMVFLIYLGGMMVVFGYTTAMAIEEYPEAWGSGVEVLVSV

Mouse                         GLMVFLIYLGGMLVVFGYTTAMATEEYPETWGSNWLILGFL

Rat                           GLMVFLIYLGGMLVVFGYTTAMATEEYPETWGSNWFIFSFF

Pig                           GLMVFLIYLGGMLVVFGYTTAMATEMYPEVWVSNKTVFGAF

Bovine                        GLMVFLIYLGGMMVVFGYTTAMATEQYPEIWLSNKAVLGAF

Rabbit                        GLMMFLIYLGGMLVVFGYTTAMATEEYPETWGSNVMILGMF

Sheep                         GLMVFLIYLGGMMVVFGYTTAMATEQYPEVWVSNKVVLGTF

Cat                           GLMVFLIYLGGMLVVFGYTTAMATEPYPEAWTSNKAVLAMF

Horse                         GLMVFLIYLGGMLVVFGYTTAMATEQYPEVWVSNTTVMGVF

Chicken                       SLALFLVYLGGMLVVFVYSVSLAADPYPEAWGD----WRVV

Xenopus laevis                SIVLFLIYLGGMLVVFAYSAA-RAKPYPEAWGS----WSVV

Zebrafish                     SLILFLIYLGGMLVVFAYSAALAAEPFPEAWGDRVVFWRVM

Caenorhabditis elegans        SYFICLLFLSGIFVILVYFSSLSKINVVK---------SYM

Drosophila                    SYILFLIFLGGMLVLFIYVTSLASNEMFNLSMKLTLFSSLI

Slime mold                    ACIYILVNVGAIAVLFLFIVMMININIVEIQETMKKYNIYM

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 – 174 NADH-ubiquinone oxidoreductase chain 6


Literature citations

A mitochondrial DNA mutation at nucleotide pair 14459 of the NADH dehydrogenase subunit 6 gene associated with maternally inherited Leber hereditary optic neuropathy and dystonia.
Jun A.S.; Brown M.D.; Wallace D.C.;
Proc. Natl. Acad. Sci. U.S.A. 91:6206-6210(1994)
Cited for: VARIANT LDYT VAL-72;

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.