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UniProtKB/Swiss-Prot P04181: Variant p.Gln90Glu

Ornithine aminotransferase, mitochondrial
Gene: OAT
Variant information

Variant position:  90
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 Glutamine (Q) to Glutamate (E) at position 90 (Q90E, p.Gln90Glu).
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 (Q) to medium size and acidic (E)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  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:  In HOGA; mistargeted, accumulates in cytoplasm.
Any additional useful information about the variant.

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



Sequence information

Variant position:  90
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  439
The length of the canonical sequence.

Location on the sequence:   LWDVEGRKYFDFLSSYSAVN  Q GHCHPKIVNALKSQVDKLTL
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                         LWDVEGRKYFDFLSSYSAVNQGHCHPKIVNALKSQVDKLTL

Mouse                         MWDVEGRQYFDFLSAYGAVSQGHCHPKIIDAMKSQVDKLTL

Rat                           MWDVEGRQYFDFLSAYGAVSQGHCHPKIIEAMKSQVDKLTL

Bovine                        VWDVEGRKYFDFLSAYSAVNQGHCHPKIVDALKSQVDKLTL

Caenorhabditis elegans        VWDVEGKKYFDFLAAYSAVNQGHCHPKLLKVVQEQASTLTL

Drosophila                    VWDVEGKRYFDYLSAYSAVNQGHCHPKIVAALTAQASKLAL

Slime mold                    VWDVEEKQYFDFLSAYSAVNQGHSHPKIVSALITQAQKCAL

Baker's yeast                 VWDPEGKLYLDFLSAYSAVNQGHCHPHIIKALTEQAQTLTL

Fission yeast                 VWDPEGREYLDFLSAYSAVNQGHCHPKIIEALVEQAQRVTL

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 26 – 439 Ornithine aminotransferase, hepatic form
Chain 36 – 439 Ornithine aminotransferase, renal form
Modified residue 102 – 102 N6-succinyllysine
Modified residue 107 – 107 N6-acetyllysine; alternate
Modified residue 107 – 107 N6-succinyllysine; alternate
Alternative sequence 1 – 138 Missing. In isoform 2.
Turn 87 – 90


Literature citations

A single amino acid substitution within the mature sequence of ornithine aminotransferase obstructs mitochondrial entry of the precursor.
Kobayashi T.; Ogawa H.; Kasahara M.; Shiozawa Z.; Matsuzawa T.;
Am. J. Hum. Genet. 57:284-291(1995)
Cited for: VARIANT HOGA GLU-90;

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.