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UniProtKB/Swiss-Prot Q96H96: Variant p.Ile97Thr

4-hydroxybenzoate polyprenyltransferase, mitochondrial
Gene: COQ2
Variant information

Variant position:  97
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 Isoleucine (I) to Threonine (T) at position 97 (I97T, p.Ile97Thr).
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 hydrophobic (I) to medium size and polar (T)
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

Variant description:  In MSA1; associated with disease susceptibility.
Any additional useful information about the variant.



Sequence information

Variant position:  97
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  371
The length of the canonical sequence.

Location on the sequence:   LMRLDKPIGTWLLYLPCTWS  I GLAAEPGCFPDWYMLSLFGT
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                         LMRLDKPIGTWLLYLPCTWSIGLAA---EPGCFPDWYMLSLFGT

Mouse                         LMRLDKPIGTWLLYLPCTWSIGLAA---DPGCFPDWYMLSL

Rat                           LMRLDKPIGTWLLYLPCTWSIGLAA---DPGCFPDWYMLSL

Bovine                        LMRLDKPIGTWLLYLPCTWSIGLAA---DPGCLPDWYMLSL

Caenorhabditis elegans        LMRVDKPIGTWLLYWPCTWSIAMAT---PAGQLPSIYMLSL

Drosophila                    LMRIDRPIGTYLLFWPCAWSIALSA---DAGCWPDLTMLGL

Slime mold                    LSRVDKPIGVWLLLYPCCWSISLAA---PAGSFPDLKTMLV

Baker's yeast                 LMRLEKPVGTWLLYLPCSWSILMGAMMQGATLSATAGMLGI

Fission yeast                 ISRAGSPTGTYLLYSPCTWSILMAAYAYDSSLVNVTKMLAL

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 35 – 371 4-hydroxybenzoate polyprenyltransferase, mitochondrial
Transmembrane 84 – 104 Helical


Literature citations

Mutations in COQ2 in familial and sporadic multiple-system atrophy.
Multiple-System Atrophy Research Collaboration;
N. Engl. J. Med. 369:233-244(2013)
Cited for: VARIANTS MSA1 LEU-29; HIS-49; THR-57; VAL-78; THR-97; SER-107; PHE-113; ALA-267; CYS-297; GLN-337 AND ALA-343; VARIANTS VAL-16; LEU-22; HIS-69 AND HIS-336;

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.