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Wikipedia does not have an article with this exact name. ... The Pyruvate decarboxylation reaction links the metabolic pathways glycolysis and the citric acid cycle. ...

Pyruvate Oxidation

Pyruvate Oxidation is the step which connects glycolysis to Krebs Cycle. It takes the two pyruvate molecules formed during glycolysis and transports them from the cytoplasm, through the two mitochondrial membranes into the mitochondrial matrix. Once inside, a multienzyme complex known as the pyruvate dehydrogenase complex catalyzes these changes:

1. A carboxyl group is removed as CO₂, which diffuses out of the cell. As a result, the original pyruvate has now been converted into a two-carbon hydroxyethyl group.
2. The remaining two-carbon hydroxyethyl group has now been oxidized to an acetyl group.
3. A NAD+ accepts the electrons removed during the oxidation and is thereby reduced by two hydrogen atoms.
4. The acetyl group becomes attached to Coenzyme A, yielding acetyl-CoA.
5. The newly formed acetyl-CoA now moves on to Krebs Cycle.
6. NAD+ is reduced to NADH as the third enzyme of the pyruvate dehydrogenase complex restores the second enzyme's lipoamide to its oxidized state. Glycolysis is a metabolic pathway by which a 6-carbon glucose (Glc) molecule is oxidized to two molecules of pyruvic acid (Pyr). ... The citric acid cycle (also known as the tricarboxylic acid cycle, the TCA cycle, or the Krebs cycle) is a series of chemical reactions of central importance in all living cells that utilize oxygen as part of cellular respiration. ... Pyruvate (CH3COCOO−) is the ionized form of pyruvic acid. ... Glycolysis is a metabolic pathway by which a 6-carbon glucose (Glc) molecule is oxidized to two molecules of pyruvic acid (Pyr). ... Organelles. ... A carboxyl or carboxylic group is a functional group consisting of a carbon atom and an oxygen atom doubly bonded to each other. ... Carbon dioxide is a chemical compound composed of one carbon and two oxygen atoms. ... General Name, Symbol, Number carbon, C, 6 Chemical series nonmetals Group, Period, Block 14, 2, p Appearance black (graphite) colorless (diamond) Atomic mass 12. ... General Name, Symbol, Number carbon, C, 6 Chemical series nonmetals Group, Period, Block 14, 2, p Appearance black (graphite) colorless (diamond) Atomic mass 12. ... Acetyl is the radical of acetic acid. ... Nicotinamide adenine dinucleotide (NAD+) Nicotinamide adenine dinucleotide (NAD+) and nicotinamide adenine dinucleotide phosphate (NADP) are two important cofactors found in cells. ... Properties The electron (also called negatron, commonly represented as e−) is a subatomic particle. ... The most fundamental reactions in chemistry are the redox processes. ... This article is about the chemistry of hydrogen. ... Properties For alternative meanings see atom (disambiguation). ... Acetyl is the radical of acetic acid. ... Categories: Biochemistry stubs | Thiols ... Categories: Biochemistry stubs | Thiols ... The citric acid cycle (also known as the tricarboxylic acid cycle, the TCA cycle, or the Krebs cycle) is a series of chemical reactions of central importance in all living cells that utilize oxygen as part of cellular respiration. ...