verb[with object] Chemistry
1Eliminate a carboxylic acid group from (an organic compound).
- Coproporphyrinogen III is transported to the interior of the mitochondrion, where 2 propionate residues are decarboxylated, yielding vinyl substituents on the 2 pyrrole rings.
- Thus, malate produced following PEP carboxylation is readily decarboxylated and the CO 2 released.
- In this compartment, called the matrix, the pyruvic acid is decarboxylated to a two-carbon acetyl group, releasing a CO 2 molecule, and is enzymatically joined to Coenzyme A, a large carrier molecule.
1.1 [no object] Undergo the process of decarboxylation.
- After electron transfer the product decarboxylates resulting in a ketylbiradical III that has a life time of about 4 s, long enough to reduce oxygen to superoxide.
- Example sentences
- The synthesis of serotonin is a two-step process involving a hydroxylation reaction catalyzed by the enzyme tryptophan - 5-monooxygenase and then a decarboxylation catalyzed by l-amino acid decarboxylase.
- A major source of ammonium, especially in C 3 plants, arises in the mitochondria from the decarboxylation of glycine to serine by the glycine decarboxylase as part of the photorespiratory cycle.
- Acetoacetate can undergo spontaneous decarboxylation to acetone, or be enzymatically converted to b-hydroxybutyrate through the action of b-hydroxybutyrate dehydrogenase.
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