Disorders in ketone body synthesis (Homo sapiens)
From WikiPathways
Description
Ketone bodies, acetoacetate and (beta)3-hydroxybutyric acid, are produced in times of hunger/starvation. The compounds are water-soluble (and also include the spontaneous breakdown product of acetoacetate, acetone). All ketone bodies are by-products when fatty acids are broken down for energy in the liver and kidneys, and used as energy source for the heart and brain.
Ketogenesis can be impeded by inborn errors of metabolism such as Methylacetoacetyl-CoA thiolase deficiency, 3-hydroxy-3-methylglutaryl-CoA synthase deficiency and 3-hydroxy-3-methylglutaryl-CoA lyase deficiency. In this pathway ketogenesis is visualised and linked to the different diseases. Ketogenesis can derive from leucine metabolism and fatty acid beta-oxidation and happens in the mitochondria. The enzymes ACAT1, HMGCS2, HMGCL and BDH1 play an important role during this proces. This pathway is based on chapter 23 of the book of Blau et al. (ISBN 3642403360 (978-3642403361)), Figures 23.1 and 23.2.
For the ketolysis pathway see: WP5195
Quality Tags
Ontology Terms
Bibliography
- Morris, AMM; ''Inborn metabolic diseases''; ISBN: 978-3-642-15720-2, 2012
- Blau, Nenad, Duran, Marinus, Gibson, K. Michael, Dionisi-Vici, Carlos; ''Physician's Guide to the Diagnosis, Treatment, and Follow-Up of Inherited Metabolic Diseases''; 978-3-642-40337-8, 2014 DOI Scholia
History
View all... |
External references
DataNodes
View all... |
Name | Type | Database reference | Comment |
---|---|---|---|
3-hydroxy-3-methylglutaryl-coenzyme A | Metabolite | CHEBI:11814 (ChEBI) | [PMID:14769483] |
3-hydroxybutyric acid | Metabolite | 20067 (ChEBI) | aka 3HB [PMID:14769483] |
ACAT1 | Protein | P24752 (Uniprot-TrEMBL) | In the book by Blau et al. referred to as MAT ; [PMID:14769483] |
Acetoacetate | Metabolite | CHEBI:13705 (ChEBI) | [PMID:14769483] |
Acetoacetyl-CoA | Metabolite | CHEBI:15345 (ChEBI) | [PMID:14769483] |
Acetyl-CoA | Metabolite | CHEBI:57288 (ChEBI) | |
BDH1 | Protein | Q02338 (Uniprot-TrEMBL) | In the book by Blau et al. they use the abbriviation 3HBD; [PMID:14769483] |
Carbon dioxide | Metabolite | CHEBI:16526 (ChEBI) | |
CoASH | Metabolite | CHEBI:15346 (ChEBI) | |
Coenzyme A | Metabolite | CHEBI:15346 (ChEBI) | |
Fatty acids | Metabolite | CHEBI:35366 (ChEBI) | |
Glycolysis | Pathway | WP534 (WikiPathways) | [PMID:14769483] |
Glycosylation | Pathway | WP4521 (WikiPathways) | |
H+ | Metabolite | CHEBI:15378 (ChEBI) | |
HMGCL | Protein | H0Y2L7 (Uniprot-TrEMBL) | |
HMGCS2 | Protein | P54868 (Uniprot-TrEMBL) | [PMID:14769483] |
Leucine, isoleucine and valine metabolism | Pathway | WP4686 (WikiPathways) | |
Leucine | Metabolite | CHEBI:15603 (ChEBI) | |
Mevalonate biosynthesis | Pathway | WP4190 (WikiPathways) | |
Mitochondrial long chain fatty acid beta-oxidation | Pathway | WP368 (WikiPathways) | [PMID:14769483] |
NAD+ | Metabolite | CHEBI:15846 (ChEBI) | |
NADH | Metabolite | CHEBI:16908 (ChEBI) | |
OXCT1 | Protein | P55809 (Uniprot-TrEMBL) | [PMID:14769483] |
Sterol biosynthesis | Pathway | WP4718 (WikiPathways) | [PMID:14769483] |
Tricarboxylic acid cycle | Pathway | WP78 (WikiPathways) | |
acetone | Metabolite | CHEBI:15347 (ChEBI) |
Annotated Interactions
View all... |
Source | Target | Type | Database reference | Comment |
---|---|---|---|---|
3-hydroxy-3-methylglutaryl-coenzyme A | mim-conversion | 24405 (Rhea) | ||
Acetoacetate | 3-hydroxybutyric acid | mim-conversion | 20524 (Rhea) | |
Acetoacetate | acetone | mim-conversion | 19730 (Rhea) | |
Acetoacetyl-CoA | 3-hydroxy-3-methylglutaryl-coenzyme A | mim-conversion | 10189 (Rhea) | [PMID:14769483] |
Acetoacetyl-CoA | Acetoacetate | mim-conversion | 25482 (Rhea) | [PMID:14769483] |
Acetyl-CoA | Acetoacetyl-CoA | mim-conversion | 21039 (Rhea) |