Coenzyme A

Coenzyme A (CoA, CoASH, or HSCoA) is adapted from pantothenic acid and adenosine triphosphate and used in metabolism in areas such as fatty acid oxidization and the citric acid cycle.

Coenzyme A (coa) A coenzyme consisting of an adenine nucleotide linked to pantothenate, which is itself linked to mercaptoethylamine; universal carrier of acyl groups, which are bound to the mercaptoethylamine unit.

Acetyl Coenzyme A a molecule of coenzyme A temporarily bonded to a 2-carbon (acetyl) group remaining from the break-down of pyruvic acid
(aceto = vinegar) ...

Coenzyme A
Coenzymes are small organic non-protein molecules that carry chemical groups between enzymes.[1] Coenzymes are sometimes referred to as cosubstrates.

coenzyme An organic nonprotein molecule, frequently a phosphorylated derivative of a water-soluble vitamin, that binds with the protein molecule (apoenzyme) to form the active enzyme (holoenzyme). Examples include biotin, NAD+, and coenzyme A.

coenzyme A
cyclic AMP
GTP
In the cell, all deoxyribonucleotides are synthesized from ribonucleotide precursors.

The two-carbon compound produced is attached to Coenzyme A to produce acetyl CoA.
Krebs Cycle
The Krebs cycle can be summarized by either of the diagrams below. The diagram below occurs twice, once for each acetyl CoA.

transition reaction Biochemical process of converting 3-carbon pyruvate into 2-carbon acetyl and attaching it to coenzyme A (CoA) so it can enter Kreb's cycle. Carbon dioxide is also released and NADH is formed (from NAD and H) in this process.

acetyl CoA An intermediate compound formed during the breakdown of glucose by adding a two-carbon fragment to a carrier molecule (Coenzyme A or CoA).
acid A substance that increases the number of hydrogen ions in a solution.

See also: Enzyme, Coenzyme, Molecule, Action, Organ