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The binding of pyruvate dehydrogenase and dihydrolipoyl dehydrogenase (flavoprotein) to dihydrolipoyl transacetylase, the core enzyme of the E. coli pyruvate dehydrogenase complex [EC oxidoreductase (decaryboxylating and acceptor-acetylating)], has been studied using sedimentation equilibrium analysis and radioactive enzymes in(More)
Cryo-electron microscopy was exploited to reveal and study the influence of pyruvate dehydrogenase (E1) occupancy on the conformational states of the Saccharomyces cerevisiae pyruvate dehydrogenase complex (PDC). Structures representative of PDC preparations with approximately 40% and full E1 occupancy were determined after the electron microscopy images(More)
The gene encoding the protein X component of the pyruvate dehydrogenase complex from Saccharomyces cerevisiae has been cloned and sequenced. A 487-base fragment of yeast genomic DNA encoding the amino-terminal region of protein X was amplified by the polymerase chain reaction using synthetic oligonucleotide primers based on amino-terminal and internal amino(More)