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UniProtKB/Swiss-Prot P03915: Variant p.Asp503Gly

NADH-ubiquinone oxidoreductase chain 5
Gene: MT-ND5
Variant information

Variant position:  503
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 Aspartate (D) to Glycine (G) at position 503 (D503G, p.Asp503Gly).
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 acidic (D) to glycine (G)
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

Sequence information

Variant position:  503
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  603
The length of the canonical sequence.

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                         PLY-----------------LKLTALAVTFLGLLTAL-------DLNYLTNKLKMKSPLCT-FYFS

Gorilla                       PLY-----------------LKLTALSITLLGLLTAL----


Chimpanzee                    PLY-----------------LKLTALGVTSLGLLTAL----

Mouse                         PWF-----------------LKTTALIISVLGFLIAL----

Rat                           PWH-----------------LKMTALLITILGFAIAL----

Pig                           PLY-----------------MKMTALIVTIMGFMLAL----

Bovine                        PYY-----------------LKTTALIVTILGFILAL----

Rabbit                        PLY-----------------MKMTALFVTIMGFTIAM----

Sheep                         PHY-----------------LKMTALTVTILGFILAL----

Cat                           PYY-----------------LKLTALAVTIAGFILAL----

Horse                         PTY-----------------MKLTALAVTILGFTLAL----

Chicken                       PTI-----------------TKTAAIIVTTLGIILAL----


Xenopus laevis                PTL-----------------AKQAAIIVSVTGLIIAM----

Zebrafish                     PIY-----------------LKLAAILVTLLGIILGL----

Caenorhabditis elegans        SLF----------------------LYVDFFGPLVFL----

Drosophila                    PIY-----------------MKLLTLFVCIVGGLFGY----


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.

Chain 1 – 603 NADH-ubiquinone oxidoreductase chain 5

Literature citations

Normal variants of human mitochondrial DNA and translation products: the building of a reference data base.
Marzuki S.; Noer A.S.; Lertrit P.; Thyagarajan D.; Kapsa R.; Utthanaphol P.; Byrne E.;
Hum. Genet. 88:139-145(1991)
Cited for: VARIANTS SER-17; SER-95; PRO-99; ASP-146; VAL-160; SER-165; SER-304; ALA-331 AND GLY-503;

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.