The structure of mitochondrial pyruvate dehydrogenase kinase isozyme 2 is of interest because it represents a family of serine-specific protein kinases that lack sequence similarity with all other eukaryotic protein kinases. Similarity exists instead with key motifs of prokaryotic histidine protein kinases and a family of eukaryotic ATPases. The 2.5-A crystal structure reported here reveals that pyruvate dehydrogenase kinase isozyme 2 has two domains of about the same size. The N-terminal half is dominated by a bundle of four amphipathic alpha-helices, whereas the C-terminal half is folded into an alpha/beta sandwich that contains the nucleotide-binding site. Analysis of the structure reveals this C-terminal domain to be very similar to the nucleotide-binding domain of bacterial histidine kinases, but the catalytic mechanism appears similar to that of the eukaryotic serine kinases and ATPases.
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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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