Biomaterial Database

Regulation of mammalian pyruvate dehydrogenase kinase. 1997

K M Popov

Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis 46202-5122, USA. kpopov@indyvax.iupui.edu

It is generally believed that mammalian pyruvate dehydrogenase kinase is a heterodimer consisting of catalytic and regulatory subunits. However, the contribution of the two subunits to the kinase-mediated signal transduction has remained undefined. In the present study recombinant components of mammalian pyruvate dehydrogenase complex were employed in order to characterize the role of the kinase catalytic subunit in the regulation of pyruvate dehydrogenase reaction. The results provide the first evidence strongly suggesting that the catalytic subunit of pyruvate dehydrogenase kinase is competent to respond to known effectors of kinase activity as well as to interact with the E2-core without assistance of a regulatory subunit.

UI	MeSH Term	Description	Entries
D008322	Mammals	Warm-blooded vertebrate animals belonging to the class Mammalia, including all that possess hair and suckle their young.	Mammalia,Mammal
D011494	Protein Kinases	A family of enzymes that catalyze the conversion of ATP and a protein to ADP and a phosphoprotein.	Protein Kinase,Kinase, Protein,Kinases, Protein
D000081382	Pyruvate Dehydrogenase Acetyl-Transferring Kinase	A pyruvate dehydrogenase kinase isozyme located in the mitochondria which converts PYRUVATE to ACETYL CoA in the CITRIC ACID CYCLE, phosphorylates SERINE residues on pyruvate dehydrogenase using ATP, and plays a key role in the regulation of GLUCOSE and fatty acid metabolism.	PDH Kinase,Pyruvate Dehydrogenase (Acetyl-Transferring) Kinase,Pyruvate Dehydrogenase (Lipoamide) Kinase,Pyruvate Dehydrogenase Kinase,Dehydrogenase Kinase, Pyruvate,Kinase, PDH,Kinase, Pyruvate Dehydrogenase,Pyruvate Dehydrogenase Acetyl Transferring Kinase
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D015398	Signal Transduction	The intracellular transfer of information (biological activation/inhibition) through a signal pathway. In each signal transduction system, an activation/inhibition signal from a biologically active molecule (hormone, neurotransmitter) is mediated via the coupling of a receptor/enzyme to a second messenger system or to an ion channel. Signal transduction plays an important role in activating cellular functions, cell differentiation, and cell proliferation. Examples of signal transduction systems are the GAMMA-AMINOBUTYRIC ACID-postsynaptic receptor-calcium ion channel system, the receptor-mediated T-cell activation pathway, and the receptor-mediated activation of phospholipases. Those coupled to membrane depolarization or intracellular release of calcium include the receptor-mediated activation of cytotoxic functions in granulocytes and the synaptic potentiation of protein kinase activation. Some signal transduction pathways may be part of larger signal transduction pathways; for example, protein kinase activation is part of the platelet activation signal pathway.	Cell Signaling,Receptor-Mediated Signal Transduction,Signal Pathways,Receptor Mediated Signal Transduction,Signal Transduction Pathways,Signal Transduction Systems,Pathway, Signal,Pathway, Signal Transduction,Pathways, Signal,Pathways, Signal Transduction,Receptor-Mediated Signal Transductions,Signal Pathway,Signal Transduction Pathway,Signal Transduction System,Signal Transduction, Receptor-Mediated,Signal Transductions,Signal Transductions, Receptor-Mediated,System, Signal Transduction,Systems, Signal Transduction,Transduction, Signal,Transductions, Signal
D017346	Protein Serine-Threonine Kinases	A group of enzymes that catalyzes the phosphorylation of serine or threonine residues in proteins, with ATP or other nucleotides as phosphate donors.	Protein-Serine-Threonine Kinases,Serine-Threonine Protein Kinase,Serine-Threonine Protein Kinases,Protein-Serine Kinase,Protein-Serine-Threonine Kinase,Protein-Threonine Kinase,Serine Kinase,Serine-Threonine Kinase,Serine-Threonine Kinases,Threonine Kinase,Kinase, Protein-Serine,Kinase, Protein-Serine-Threonine,Kinase, Protein-Threonine,Kinase, Serine-Threonine,Kinases, Protein Serine-Threonine,Kinases, Protein-Serine-Threonine,Kinases, Serine-Threonine,Protein Kinase, Serine-Threonine,Protein Kinases, Serine-Threonine,Protein Serine Kinase,Protein Serine Threonine Kinase,Protein Serine Threonine Kinases,Protein Threonine Kinase,Serine Threonine Kinase,Serine Threonine Kinases,Serine Threonine Protein Kinase,Serine Threonine Protein Kinases