Acetoacetyl-CoA

acetoacetyl CoA

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Intermediate in ketogenesis and utilization of the ketones, beta-hydroxybutyrate and acetoacetate. Penultimate intermediate in the beta-oxidation of fatty acids.

Acetoacetyl-CoA

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Acetoacetyl-CoA

Identifiers
CAS number	1420-36-6^Y
PubChem	74
ChemSpider	83198^Y
MeSH	acetoacetyl+CoA
ChEBI	CHEBI:15345^Y
Jmol-3D images	Image 1
SMILES O=C(C)CC(=O)SCCNC(=O)CCNC(=O)[C@H](O)C(C)(C)COP(=O)(O)OP(=O)(O)OC[C@H]3O[C@@H](n2cnc1c(ncnc12)N)[C@H](O)[C@@H]3OP(=O)(O)O
InChI InChI=1S/C25H40N7O18P3S/c1-13(33)8-16(35)54-7-6-27-15(34)4-5-28-23(38)20(37)25(2,3)10-47-53(44,45)50-52(42,43)46-9-14-19(49-51(39,40)41)18(36)24(48-14)32-12-31-17-21(26)29-11-30-22(17)32/h11-12,14,18-20,24,36-37H,4-10H2,1-3H3,(H,27,34)(H,28,38)(H,42,43)(H,44,45)(H2,26,29,30)(H2,39,40,41)/t14-,18-,19-,20+,24-/m1/s1^Y Key: OJFDKHTZOUZBOS-CITAKDKDSA-N^Y InChI=1/C25H40N7O18P3S/c1-13(33)8-16(35)54-7-6-27-15(34)4-5-28-23(38)20(37)25(2,3)10-47-53(44,45)50-52(42,43)46-9-14-19(49-51(39,40)41)18(36)24(48-14)32-12-31-17-21(26)29-11-30-22(17)32/h11-12,14,18-20,24,36-37H,4-10H2,1-3H3,(H,27,34)(H,28,38)(H,42,43)(H,44,45)(H2,26,29,30)(H2,39,40,41)/t14-,18-,19-,20+,24-/m1/s1 Key: OJFDKHTZOUZBOS-CITAKDKDBD
Properties
Molecular formula	C₂₅H₄₀N₇O₁₈P₃S
Molar mass	851.609 g/mol
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Acetoacetyl CoA is the precursor of HMG-CoA in the Mevalonate pathway, which is essential for cholesterol synthesis. It also takes a similar role in the ketone bodies synthesis pathway of the liver. In the ketone bodies digestion pathway (in the tissue), it is no longer associated with having HMG-CoA as a product or as a reactant.

It is created from acetyl-CoA by thiolase, and it is acted upon by HMG-CoA synthase to form HMG-CoA. (During the metabolism of leucine, this last reaction is reversed.)

Mevalonate pathway

to HMG-CoA	Acetyl-CoA · Acetoacetyl-CoA · HMG-CoA

Ketone bodies	Acetone · Acetoacetic acid · beta-Hydroxybutyric acid

to DMAPP	Mevalonic acid · Phosphomevalonic acid · 5-Diphosphomevalonic acid · Isopentenyl pyrophosphate · Dimethylallyl pyrophosphate

Geranyl-	Geranyl pyrophosphate · Geranylgeranyl pyrophosphate

Carotenoid	Prephytoene diphosphate · Phytoene

Non-mevalonate pathway

DOXP · MEP · CDP-ME · CDP-MEP · MEcPP · HMB-PP · IPP · DMAPP

To Cholesterol

Farnesyl pyrophosphate · Squalene · 2,3-Oxidosqualene · Lanosterol

Lanosterol · Lathosterol · 7-Dehydrocholesterol · Cholesterol

Lanosterol · Zymosterol · 7-Dehydrodesmosterol · Desmosterol · Cholesterol

Steroid

Corticosteroids
(C21 pregnane)

Mineralocorticoids	Pregnenolone · Progesterone · Cortodoxone · Corticosterone · Aldosterone

Glucocorticoids	Pregnenolone · 17-Hydroxypregnenolone · 17-Hydroxyprogesterone · Cortisol Cortisol · Cortisone

Sex steroids

Androgens (C19 androstane)	DHEA · Androstenedione/5-Androstenediol · Testosterone · Dihydrotestosterone DHEA sulfate · Epitestosterone

Estrogens (C18 estrane)	Estetrol · Estrone · Estradiol · Estriol

Nonhuman

Phytosterols	Stigmasterol · Brassicasterol

Ergosterols	Ergosterol · Ergocalciferol

M: MET

mt, k, c/g/r/p/y/i, f/h/s/l/o/e, a/u, n, m

k, cgrp/y/i, f/h/s/l/o/e, au, n, m, epon

m(A16/C10),i(k, c/g/r/p/y/i, f/h/s/o/e, a/u, n, m)

M: END

anat/phys/devp/horm

noco(d)/cong/tumr, sysi/epon

proc, drug (A10/H1/H2/H3/H5)

biochemical families: proteins (amino acids/intermediates) · nucleic acids (constituents/intermediates) · carbohydrates (glycoproteins, alcohols, glycosides)
lipids (fatty acids/intermediates, phospholipids, steroids, sphingolipids, eicosanoids) · tetrapyrroles/intermediates

Amino acid metabolism metabolic intermediates

K→acetyl-CoA

lysine→	Saccharopine · Allysine · α-Aminoadipic acid · α-Aminoadipate · Glutaryl-CoA · Glutaconyl-CoA · Crotonyl-CoA · β-Hydroxybutyryl-CoA

leucine→	α-Ketoisocaproic acid · Isovaleryl-CoA · 3-Methylcrotonyl-CoA · 3-Methylglutaconyl-CoA · HMG-CoA

tryptophan→alanine→	N'-Formylkynurenine · Kynurenine · Anthranilic acid · 3-Hydroxykynurenine · 3-Hydroxyanthranilic acid · 2-Amino-3-carboxymuconic semialdehyde · 2-Aminomuconic semialdehyde · 2-Aminomuconic acid · Glutaryl-CoA

G→pyruvate→citrate

glycine→serine→	3-Phosphoglyceric acid glycine→creatine: Glycocyamine · Phosphocreatine · Creatinine

G→glutamate→
α-ketoglutarate

histidine→	Urocanic acid · Imidazol-4-one-5-propionic acid · Formiminoglutamic acid · Glutamate-1-semialdehyde

proline→	1-Pyrroline-5-carboxylic acid

arginine→	Ornithine · Putrescine · Agmatine

other	cysteine+glutamate→glutathione: γ-Glutamylcysteine

G→propionyl-CoA→
succinyl-CoA

valine→	α-Ketoisovaleric acid · Isobutyryl-CoA · Methacrylyl-CoA · 3-Hydroxyisobutyryl-CoA · 3-Hydroxyisobutyric acid · 2-Methyl-3-oxopropanoic acid

isoleucine→	2,3-Dihydroxy-3-methylpentanoic acid · 2-Methylbutyryl-CoA · Tiglyl-CoA · 2-Methylacetoacetyl-CoA

methionine→	generation of homocysteine: S-Adenosyl methionine · S-Adenosyl-L-homocysteine · Homocysteine conversion to cysteine: Cystathionine · alpha-Ketobutyric acid+Cysteine

threonine→	α-Ketobutyric acid

propionyl-CoA→	Methylmalonyl-CoA

G→fumarate


phenylalanine→tyrosine→	4-Hydroxyphenylpyruvic acid · Homogentisic acid · 4-Maleylacetoacetate

G→oxaloacetate

see urea cycle

Other


Cysteine metabolism	Cysteine sulfinic acid

M: MET

mt, k, c/g/r/p/y/i, f/h/s/l/o/e, a/u, n, m

k, cgrp/y/i, f/h/s/l/o/e, au, n, m, epon

m(A16/C10),i(k, c/g/r/p/y/i, f/h/s/o/e, a/u, n, m)

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