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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P39210: Variant p.Gly94Arg

Mitochondrial inner membrane protein Mpv17
Gene: MPV17
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Variant information Variant position: help 94 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 Glycine (G) to Arginine (R) at position 94 (G94R, p.Gly94Arg). 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 glycine (G) to large size and basic (R) 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 MTDPS6. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 94 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 176 The length of the canonical sequence.
Location on the sequence: help DRFIPGTTKVDALKKMLLDQ G GFAPCFLGCFLPLVGALNGL 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                         DRFIPGTTKV--DALKKMLLDQGGFAPCFLGCFLPLVGALNGL

Mouse                         DHLIPGTTKV--HALKKMLLDQGGFAPCFLGCFLPLVGILN

Rat                           DHLIPGTTKV--NALKKMLLDQGGFAPCFLGCFLPLVGVLN

Bovine                        DRLIPGTTKV--DALKKMLLDQGGFAPCFLGCFLPLVGTLN

Xenopus laevis                DRIIPGSGKP--VALKKMLLDQVAFAPCFLGCFLSIASALN

Zebrafish                     DKLVTGGTKS--AALKKMLVDQVGFAPCFLGAFLGITGTLN

Caenorhabditis elegans        EKVKGNNKSL--LLVKKLCIDQLCFSPCFNAAILFNLRLLQ

Drosophila                    ESRVPKTYSPMRRGVTKMLVDQTLFAPPFTMAMSFLVPLSN
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 – 176 Mitochondrial inner membrane protein Mpv17
Transmembrane 94 – 114 Helical
Site 92 – 92 Determines ion selectivity
Mutagenesis 80 – 80 T -> A. Does not affect gating properties of the channel.
Mutagenesis 92 – 92 D -> K. Affects ion selectivity of the channel.
Mutagenesis 99 – 99 C -> A. Does not affect conductance and gating properties of the channel.



Literature citations
MPV17-associated hepatocerebral mitochondrial DNA depletion syndrome: new patients and novel mutations.
El-Hattab A.W.; Li F.Y.; Schmitt E.; Zhang S.; Craigen W.J.; Wong L.J.;
Mol. Genet. Metab. 99:300-308(2010)
Cited for: VARIANTS MTDPS6 GLN-50; GLU-88; LYS-88 DEL; LEU-91 DEL; ARG-94; LEU-98 AND ASP-162; MPV17 mutations in patients with hepatocerebral mitochondrial DNA depletion syndrome.
Kim J.; Kang E.; Kim Y.; Kim J.M.; Lee B.H.; Murayama K.; Kim G.H.; Choi I.H.; Kim K.M.; Yoo H.W.;
Mol. Genet. Metab. Rep. 8:74-76(2016)
Cited for: VARIANTS MTDPS6 GLU-66; ARG-94 AND LEU-98;
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.