Glycine cleavage (Saccharomyces cerevisiae)
From WikiPathways
Description
In eukaryotes the mitochondrial glycine cleavage complex (glycine decarboxylase complex) is a loosely-associated multienzyme complex that catalyzes the oxidative cleavage of glycine to carbon dioxide, ammonia, and a methylene group, in a multistep reaction (in [Nakai05]). The methylene group, carried by 5,10-methylenetetrahydropteroyl mono-L-glutamate, enters cellular one-carbon metabolism. In mammals, it is the primary pathway for glycine catabolism [Hampson83].
The glycine cleavage complex is composed of four different proteins: the P-protein ( EC 1.4.4.2, glycine dehydrogenase (aminomethyl-transferring)); the T-protein ( EC 2.1.2.10, aminomethyltransferase); the L-protein ( EC 1.8.1.4, dihydrolipoyl dehydrogenase); and the H-protein (lipoyl-carrier protein, a non-enzyme that contains a lipoyl group that interacts successively with the three other components of the complex during the enzymatic reactions. The L-protein (also known as the E3 component) also participates in the pyruvate decarboxylation to acetyl CoA, the 2-oxoglutarate decarboxylation to succinyl-CoA, and the 2-oxoisovalerate decarboxylation to isobutanoyl-CoA multienzyme systems.
Description from [YeastPathways](https://pathway.yeastgenome.org/).Quality Tags
Ontology Terms
Pathway Ontology : Wnt signaling pathway
Cell Type : embryonic stem cell
Bibliography
- ''glycine cleavage''; YeastPathways,
History
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External references
DataNodes
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Name ![]() | Type ![]() | Database reference ![]() | Comment ![]() |
---|---|---|---|
5,10-methylene-THF | Metabolite | 31690-11-6 (CAS) ![]() | |
CO2 | Metabolite | CHEBI:16526 (ChEBI) ![]() | |
GCV1 | GeneProduct | S000002426 (SGD) ![]() | |
GCV2 | GeneProduct | S000004801 (SGD) ![]() | |
H+ | Metabolite | 15378 (ChEBI) ![]() | |
L-glycine | Metabolite | 56-40-6 (CAS) ![]() | |
LPD1 | GeneProduct | S000001876 (SGD) ![]() | |
NAD+ | Metabolite | 57540 (ChEBI) ![]() | |
NADH | Metabolite | 57945 (ChEBI) ![]() | |
NH4+ | Metabolite | 28938 (ChEBI) ![]() | |
THF | Metabolite | CHEBI:26911 (ChEBI) ![]() | |
a [glycine-cleavage complex H protein] N6-aminomethyldihydrolipoyl-L-lysine | Metabolite | ||
a [glycine-cleavage complex H protein] N6-dihydrolipoyl-L-lysine | Metabolite | ||
a [glycine-cleavage complex H protein] N6-lipoyl-L-lysine | Metabolite |
Annotated Interactions
No annotated interactions