UniProtKB/SwissProt variant VAR

Variant information

Variant position:

220

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

Type of variant:

Disease [Disclaimer]

The variants are classified into three categories: Disease, Polymorphism and Unclassified.

Disease: Variants implicated in disease according to literature reports.
Polymorphism: Variants not reported to be implicated in disease.
Unclassified: Variants with uncertain implication in disease according to literature reports. Evidence against or in favor of a pathogenic role is limited and/or conflicting.

Residue change:

From Alanine (A) to Valine (V) at position 220 (A220V, p.Ala220Val).

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 small size and hydrophobic (A) to medium size and hydrophobic (V)

The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:

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

Involvement in disease:

Acyl-CoA dehydrogenase family, member 9, deficiency (ACAD9 deficiency) [MIM:611126]: An autosomal recessive metabolic disorder associated with mitochondrial complex I deficiency, resulting in multisystemic and variable manifestations. Clinical features include infantile onset of acute metabolic acidosis, Reye-like episodes (brain edema and vomiting that may rapidly progress to seizures, coma and death), exercise intolerance, hypertrophic cardiomyopathy, liver failure, muscle weakness, and neurologic dysfunction. {ECO:0000269|PubMed:17564966, ECO:0000269|PubMed:20816094, ECO:0000269|PubMed:20929961, ECO:0000269|PubMed:21057504, ECO:0000269|PubMed:22499348, ECO:0000269|PubMed:23836383, ECO:0000269|PubMed:23996478, ECO:0000269|PubMed:26741492}. Note=The disease is caused by mutations affecting the gene represented in this entry.

The name and a short description of the disease associated with the variant. For more information about the disease, the user can refer to OMIM, following the link provided after the disease acronym.

Variant description:

In MC1DN20.

Any additional useful information about the variant.

Sequence information

Variant position:

220

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

Protein sequence length:

621

The length of the canonical sequence.

Location on the sequence:

EDKKHYILNGSKVWITNGGL A NIFTVFAKTEVVDSDGSVKD

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                         EDKKHYILNGSKVWITNGGLANIFTVFAKTEVVDSDGSVKD

Mouse                         EDKKYFILNGSKVWITNGGLANIFTVFAKTEVVDSDGSKTD

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.

Type	Positions	Description
Chain	38 – 621	Complex I assembly factor ACAD9, mitochondrial

Literature citations

A patient with complex I deficiency caused by a novel ACAD9 mutation not responding to riboflavin treatment.
Nouws J.; Wibrand F.; van den Brand M.; Venselaar H.; Duno M.; Lund A.M.; Trautner S.; Nijtmans L.; Ostergard E.;
JIMD Rep. 12:37-45(2014)
Cited for: VARIANT MC1DN20 VAL-220;

UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q9H845: Variant p.Ala220Val