The gene encoding the pyruvate dehydrogenase (PDH) beta subunit (E1 beta) of the PDH complex from Saccharomyces cerevisiae has been cloned, sequenced, disrupted, and expressed. Two overlapping DNA fragments were generated from a yeast genomic DNA library by the polymerase chain reaction with synthetic oligonucleotide primers based on amino acid sequences of the yeast and human E1 beta subunits. The DNA fragments were subcloned and sequenced. The composite sequence has an open reading frame of 1098 nucleotides encoding a putative presequence of 33 amino acid residues and a mature protein of 333 residues with a calculated M(r) = 36,486. Yeast and human E1 beta exhibit 62% sequence identity. The size of the mRNA is approximately 1.5 kilobases. Hybridization analysis showed that the E1 beta gene (PDH beta 1) is localized to chromosome II. Disruption of PDH beta 1 is not lethal under vegetative growth conditions. The null mutant transformed with PDH beta 1 on a unit-copy plasmid produced mature E1 beta and a functional PDH complex.
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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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