Chemistry:Coumaroyl-CoA

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Coumaroyl-Coenzyme A
4-Coumaroyl-CoA.svg
Names
IUPAC name
3′-O-Phosphonoadenosine 5′-[(3R)-3-hydroxy-4-({3-[(2-{[(2E)-3-(4-hydroxyphenyl)prop-2-enoyl]sulfanyl}ethyl)amino]-3-oxopropyl}amino)-2,2-dimethyl-4-oxobutyl dihydrogen diphosphate]
Systematic IUPAC name
[(2R,3S,4R,5R)-5-(6-Amino-9H-purin-9-yl)-4-hydroxy-3-(phosphonooxy)oxolan-2-yl]methyl (3R)-3-hydroxy-4-({3-[(2-{[(2E)-3-(4-hydroxyphenyl)prop-2-enoyl]sulfanyl}ethyl)amino]-3-oxopropyl}amino)-2,2-dimethyl-4-oxobutyl dihydrogen diphosphate
Other names
4-Coumaroyl-CoA
p-Coumaroyl-CoA
4-Hydroxycinnamoyl-CoA
Identifiers
3D model (JSmol)
ChemSpider
KEGG
Properties
C30H42N7O18P3S
Molar mass 913.67 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Coumaroyl-coenzyme A is the thioester of coenzyme-A and coumaric acid. Coumaroyl-coenzyme A is a central intermediate in the biosynthesis of myriad natural products found in plants. These products include lignols (precursors to lignin and lignocellulose), flavonoids, isoflavonoids, coumarins, aurones, stilbenes, catechin, and other phenylpropanoids.[1]

Biosynthesis and significance

It is generated in nature from phenylalanine, which is converted by PAL to trans-cinnamate. Trans-cinnamate is hydroxylated by trans-cinnamate 4-monooxygenase to give 4-hydroxycinnamate (i.e, coumarate). Coumarate is condensed with coenzyme-A in the presence of 4-coumarate-CoA ligase:

ATP + 4-coumarate + CoA [math]\displaystyle{ \rightleftharpoons }[/math] AMP + diphosphate + 4-coumaroyl-CoA.

Enzymes using Coumaroyl-Coenzyme A

References

  1. Vogt, T. (2010). "Phenylpropanoid Biosynthesis". Molecular Plant 3: 2–20. doi:10.1093/mp/ssp106. PMID 20035037.