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From Wikipedia, the free encyclopedia
In enzymology, a succinate-semialdehyde dehydrogenase (SSADH) (EC 1.2.1.24) is an enzyme that catalyzes the chemical reaction
| succinate-semialdehyde dehydrogenase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Succinate semialdehyde dehydrogenase dodecamer, Human | |||||||||
| Identifiers | |||||||||
| EC no. | 1.2.1.24 | ||||||||
| CAS no. | 9028-95-9 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
| |||||||||
The 3 substrates of this enzyme are succinate semialdehyde, NAD+, and H2O, whereas its 3 products are succinate, NADH, and H+.
This enzyme belongs to the family of oxidoreductases, specifically those acting on the aldehyde or oxo group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is succinate-semialdehyde:NAD+ oxidoreductase. Other names in common use include succinate semialdehyde dehydrogenase, succinic semialdehyde dehydrogenase, succinyl semialdehyde dehydrogenase, and succinate semialdehyde:NAD+ oxidoreductase. This enzyme participates in glutamate and butyrate metabolism.
Succinate-semialdehyde dehydrogenase is found in organisms ranging across the tree of life from bacteria to humans. It is important in the degradation of γ-aminobutyric acid in humans, and deficiency of the enzyme causes serious health effects (succinic semialdehyde dehydrogenase deficiency).
In bacteria, the enzyme is also involved in γ-aminobutyric acid degradation, but can be recruited to facilitate other functions, such as converting succinate-semialdehyde formed during fission of the pyridine ring to succinic acid for entry into the Krebs Cycle.[1]
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