The X-ray crystal structure of Escherichia coli succinic semialdehyde dehydrogenase; structural insights into NADP+/enzyme interactions.Langendorf, C.G., Key, T.L., Fenalti, G., Kan, W.T., Buckle, A.M., Caradoc-Davies, T., Tuck, K.L., Law, R.H., Whisstock, J.C.
(2010) PLoS One 5: e9280-e9280
- PubMed: 20174634
- DOI: https://doi.org/10.1371/journal.pone.0009280
- Primary Citation of Related Structures:
- PubMed Abstract:
In mammals succinic semialdehyde dehydrogenase (SSADH) plays an essential role in the metabolism of the inhibitory neurotransmitter gamma-aminobutyric acid (GABA) to succinic acid (SA). Deficiency of SSADH in humans results in elevated levels of GABA and gamma-Hydroxybutyric acid (GHB), which leads to psychomotor retardation, muscular hypotonia, non-progressive ataxia and seizures. In Escherichia coli, two genetically distinct forms of SSADHs had been described that are essential for preventing accumulation of toxic levels of succinic semialdehyde (SSA) in cells.
Department of Biochemistry and Molecular Biology, Monash University, Clayton Campus, Melbourne, Victoria, Australia.