Peptide fragments of a porcine benzodiazepine-binding protein were used to isolate the cDNA of a related human protein. The cDNA encodes a polypeptide of 312 amino acid residues that is homologous to a bacterial pyridoxal kinase. Transient expression of the cDNA in human embryonic kidney cells confirmed that it encodes human pyridoxal kinase. The recombinant enzyme displayed a Km value of 3.3 microM for pyridoxal and was inhibited competitively by 4-deoxypyridoxine (Ki = 2.8 microM). Benzodiazepine receptor ligands that bound to the purified porcine protein also exerted a potent inhibitory effect on human pyridoxal kinase activity. Transcripts of the pyridoxal kinase gene were detectable in all human tissues examined, and were particularly abundant in the testes. The gene is localized on chromosome 21q22.3 and represents a candidate gene for at least one genetic disorder that has been mapped to this region (autoimmune polyglandular disease type 1).
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| Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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| Site | Modification | Modifier | Source | Reference |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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| Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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| Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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