ABAT 4-aminobutyrate aminotransferase
Gene ID: 18, updated on 4-Jan-2025Gene type: protein coding
Also known as: GABAT; NPD009; GABA-AT
- See all available tests in GTR for this gene
- Go to complete Gene record for ABAT
- Go to Variation Viewer for ABAT variants
Summary
4-aminobutyrate aminotransferase (ABAT) is responsible for catabolism of gamma-aminobutyric acid (GABA), an important, mostly inhibitory neurotransmitter in the central nervous system, into succinic semialdehyde. The active enzyme is a homodimer of 50-kD subunits complexed to pyridoxal-5-phosphate. The protein sequence is over 95% similar to the pig protein. GABA is estimated to be present in nearly one-third of human synapses. ABAT in liver and brain is controlled by 2 codominant alleles with a frequency in a Caucasian population of 0.56 and 0.44. The ABAT deficiency phenotype includes psychomotor retardation, hypotonia, hyperreflexia, lethargy, refractory seizures, and EEG abnormalities. Multiple alternatively spliced transcript variants encoding the same protein isoform have been found for this gene. [provided by RefSeq, Jul 2008]
Associated conditions
See all available tests in GTR for this gene
| Description | Tests |
|---|---|
| Gamma-aminobutyric acid transaminase deficiency | See labs |
| Genome-wide association study of proneness to anger. GeneReviews: Not available |
Genomic context
- Location:
- 16p13.2
- Sequence:
- Chromosome: 16; NC_000016.10 (8674617..8784570)
- Total number of exons:
- 23
Variation
| Resource | Links for this gene |
|---|---|
| ClinVar | Variants reported to ClinVar |
| dbVar | Studies and variants |
| SNP | Variation Viewer for ABAT variants |
| Genome viewer | Explore NCBI-annotated and select non-NCBI annotated genome assemblies |
- ABAT database
- ClinVarRelated medical variations
- dbVarLink from Gene to dbVar
- MedGenRelated information in MedGen
- OMIMLink to related OMIM entry
- PubMed (OMIM)Gene links to PubMed derived from omim_pubmed_cited links
- RefSeq RNAsLink to Nucleotide RefSeq RNAs
- RefSeqGeneLink to Nucleotide RefSeqGenes
- Variation ViewerRelated Variants
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