Ubiquinone reductase

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Ubiquinone reductase may refer to:

NADH dehydrogenase (EC 1.6.99.3, cytochrome c reductase, type 1 dehydrogenase, beta-NADH dehydrogenase dinucleotide, diaphorase, dihydrocodehydrogenase I dehydrogenase, dihydronicotinamide adenine dinucleotide dehydrogenase, diphosphopyridine diaphorase, DPNH diaphorase, NADH diaphorase, NADH hydrogenase, NADH oxidoreductase, NADH-menadione oxidoreductase, reduced diphosphopyridine nucleotide diaphorase) is an enzyme with systematic name NADH:acceptor oxidoreductase. This enzyme catalyses the following chemical reaction

NADH:ubiquinone reductase (non-electrogenic) (EC 1.6.5.9, NDH-2, ubiquinone reductase, coenzyme Q reductase, dihydronicotinamide adenine dinucleotide-coenzyme Q reductase, DPNH-coenzyme Q reductase, DPNH-ubiquinone reductase, NADH-coenzyme Q oxidoreductase, NADH-coenzyme Q reductase, NADH-CoQ oxidoreductase, NADH-CoQ reductase) is an enzyme with systematic name NADH:ubiquinone oxidoreductase. This enzyme catalyses the following chemical reaction

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Electron transport chain A process in which a series of electron carriers operate together to transfer electrons from donors to any of several different terminal electron acceptors to generate a transmembrane electrochemical gradient.

An electron transport chain (ETC) is a series of complexes that transfer electrons from electron donors to electron acceptors via redox (both reduction and oxidation occurring simultaneously) reactions, and couples this electron transfer with the transfer of protons (H+ ions) across a membrane. This creates an electrochemical proton gradient that drives the synthesis of adenosine triphosphate (ATP), a molecule that stores energy chemically in the form of highly strained bonds. The molecules of the chain include peptides, enzymes (which are proteins or protein complexes), and others. The final acceptor of electrons in the electron transport chain during aerobic respiration is molecular oxygen although a variety of acceptors other than oxygen such as sulfate exist in anaerobic respiration.

Respiratory complex I

Respiratory complex I, EC 1.6.5.3 is the first large protein complex of the respiratory chains of myriad organisms from bacteria to humans. It catalyzes the transfer of electrons from NADH to coenzyme Q10 (CoQ10) and translocates protons across the inner mitochondrial membrane in eukaryotes or the plasma membrane of bacteria.

NADH dehydrogenase (quinone)

In enzymology, a NADH dehydrogenase (quinone) (EC 1.6.5.11) is an enzyme that catalyzes the chemical reaction

NAD(P)H dehydrogenase (quinone)

In enzymology, a NAD(P)H dehydrogenase (quinone) (EC 1.6.5.2) is an enzyme that catalyzes the chemical reaction

NADH:ubiquinone reductase (Na+-transporting) (EC 1.6.5.8 is an enzyme with systematic name NADH:ubiquinone oxidoreductase (Na+-translocating). In bacteria, three different types of respiratory NADH:quinone oxidoreductases (NQr) have been described: the electrogenic complex I, also called NDH I in bacteria, the non-electrogenic NADH:quinone oxidoreductases (NDH II), and the Na+-translocating NADH:quinone oxidoreductases Na+-NQr. The common function of these transmembrane enzymes in respiration is to oxidize NADH using ubiquinone (Q) as electron acceptor. The net reaction thus yields ubiquinol (QH2), the reducing substrate of enzyme complexes further along the respiratory chain, and NAD+, which is used as oxidizing agent in numerous cellular processes.

NADH:ubiquinone oxidoreductase may stand for

Coenzyme Q reductase may refer to:

Dihydronicotinamide adenine dinucleotide-coenzyme Q reductase may stand for

DPNH-coenzyme Q reductase may refer to:

DPNH-ubiquinone reductase may refer to:

NADH-coenzyme Q reductase may refer to:

NADH-CoQ reductase may be:

NADH-ubiquinone reductase may refer to:

NADH-ubiquinone oxidoreductase may stand for

NADH-Q6 oxidoreductase may stand for

Electron transfer complex I may refer to:

NADH2 dehydrogenase (ubiquinone) may stand for