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UniProtKB/Swiss-Prot Q96AG3: Variant p.Thr142Ile

Mitochondrial outer membrane protein SLC25A46
Gene: SLC25A46
Variant information

Variant position:  142
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 Threonine (T) to Isoleucine (I) at position 142 (T142I, p.Thr142Ile).
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 polar (T) to medium size and hydrophobic (I)
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 PCH1E; loss of protein expression.
Any additional useful information about the variant.

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



Sequence information

Variant position:  142
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  418
The length of the canonical sequence.

Location on the sequence:   VLRRQCQVNYHAQHYHLTPF  T VINIMYSFNKTQGPRALWKG
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                         VLRRQCQVNYHAQHYHLTPFTVINIMYSFNKTQGPRALWKG

Mouse                         VLRRQCQVNYHARHYHLTPFSIINIMYSFNKTQGPRALWKG

Rat                           VLRRQCQVNYHARHYHLTPFSVINIMYSFNKTQGPRALWKG

Chicken                       VLRRQCQVNYHARNYHLTPFTIVNIMYSINKTQGPRALWKG

Xenopus tropicalis            VLRRQCQVNYHARNYQLSPFSIVNIMYSFTKTQGFRALWKG

Zebrafish                     VFRRQCQVNYHARCYHLSPMTAISVMYNVTKTQGPKALWKG

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 – 418 Mitochondrial outer membrane protein SLC25A46
Repeat 96 – 187 Solcar 1
Alternative sequence 1 – 146 Missing. In isoform 2.


Literature citations

SLC25A46 is required for mitochondrial lipid homeostasis and cristae maintenance and is responsible for Leigh syndrome.
Janer A.; Prudent J.; Paupe V.; Fahiminiya S.; Majewski J.; Sgarioto N.; Des Rosiers C.; Forest A.; Lin Z.Y.; Gingras A.C.; Mitchell G.; McBride H.M.; Shoubridge E.A.;
EMBO Mol. Med. 8:1019-1038(2016)
Cited for: VARIANT PCH1E ILE-142; CHARACTERIZATION OF VARIANT PCH1E ILE-142; FUNCTION; INTERACTION WITH THE EMC AND MICOS COMPLEXES; SUBCELLULAR LOCATION;

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.