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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P00846: Variant p.Ala155Thr

ATP synthase subunit a
Gene: MT-ATP6
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Variant information Variant position: help 155 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help 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: help From Alanine (A) to Threonine (T) at position 155 (A155T, p.Ala155Thr). 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 hydrophobic (A) to medium size and polar (T) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help 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

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


Sequence information Variant position: help 155 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 226 The length of the canonical sequence.
Location on the sequence: help TPLIPMLVIIETISLLIQPM A LAVRLTANITAGHLLMHLIG 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                         TPLIPM-LVIIETISLLIQPMALAVRLTANITAGHLL-MHLIG

Gorilla                       TPLIPM-LVIIETISLFIQPMALAVRLTANITAGHLL-MHL

                              LPLIPM-LVVIETISLFIQPMALAVRLTANITAGHLL-IHL

Chimpanzee                    TPLIPM-LVIIETISLLIQPMALAVRLTANITAGHLL-MHL

Mouse                         ISLIPM-LIIIETISLFIQPMALAVRLTANITAGHLL-MHL

Rat                           ISLIPM-LIIIETISLFIQPMALAVRLTANITAGHLL-MHL

Pig                           ALLIPM-LVIIETISLFIQPVALAVRLTANITAGHLL-IHL

Bovine                        TPLIPM-LVIIETISLFIQPMALAVRLTANITAGHLL-IHL

Rabbit                        IPLIPM-LIVIETISLFIQPMALAVRLTANITAGHLL-MHL

Goat                          TPLIPM-LVIIETISLFIQPMALAVRLTANITAGHLL-IHL

Sheep                         TPLIPM-LVIIETISLFIQPVALAVRLTANITAGHLL-IHL

Cat                           VPLIPM-LVVIETISLFIQPMALAVRLTANITAGHLL-MHL

Horse                         IFLIPM-LVIIETISLFIQPVALAVRLTANITAGHLL-MHL

Chicken                       TPLIPA-LIMIETTSLLIRPLALGVRLTANLTAGHLL-IQL

Xenopus laevis                TPLIPV-LIIIETISLFIRPLALGVRLTANLTAGHLL-IQL

Zebrafish                     IPLIPA-LIIIETISLFIRPLALGVRLTANLTAGHLL-IQL

Caenorhabditis elegans        TYLKTLSMLLIEIVSEFSRPLALTVRLTVNITVGHLVSMML

Drosophila                    AILMPF-MVCIETISNIIRPGTLAVRLTANMIAGHLL-LTL

Slime mold                    PWLLPL-LVFIEIMSYVLRPISLAVRLFANMLAGHLL-IHI

Baker's yeast                 LPLVPL-LVIIETLSYFARAISLGLRLGSNILAGHLL-MVI

Fission yeast                 TPLIPL-LVLIEFVSYIARGLSLGIRLGANIIAGHLT-MSI

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 – 226 ATP synthase subunit a
Transmembrane 138 – 158 Helical
Helix 140 – 180



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-33; ALA-59; TYR-61; TYR-90; ALA-112; THR-155; ILE-213 AND GLY-219; Automating the identification of DNA variations using quality-based fluorescence re-sequencing: analysis of the human mitochondrial genome.
Rieder M.J.; Taylor S.L.; Tobe V.O.; Nickerson D.A.;
Nucleic Acids Res. 26:967-973(1998)
Cited for: VARIANT THR-155;
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.