Succinic semialdehyde

Succinic semialdehyde (SSA) is a GABA metabolite. It is formed from GABA by the action of GABA transaminase (4-aminobutyrate aminotransferase) and further oxidised to become succinic acid, which enters TCA cycle. SSA is oxidized into succinic acid by the enzyme succinic semialdehyde dehydrogenase, which uses NAD+ as a cofactor.[2] [3]  When the oxidation of succinic semialdehyde to succinic acid is impaired, accumulation of succinic semialdehyde takes place which leads to succinic semialdehyde dehydrogenase deficiency.[3]

Succinic semialdehyde
Names
Preferred IUPAC name
4-Oxobutanoic acid
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.155.728
KEGG
MeSH Succinic+semialdehyde
UNII
  • InChI=1S/C4H6O3/c5-3-1-2-4(6)7/h3H,1-2H2,(H,6,7) checkY
    Key: UIUJIQZEACWQSV-UHFFFAOYSA-N checkY
  • InChI=1/C4H6O3/c5-3-1-2-4(6)7/h3H,1-2H2,(H,6,7)
    Key: UIUJIQZEACWQSV-UHFFFAOYAS
  • O=CCCC(=O)O
Properties
C4H6O3
Molar mass 102.089 g/mol
Appearance oil
Boiling point 135 °C (275 °F; 408 K) at 14 mmHg
soluble in water, ethanol, benzene, diethyl ether[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)
Infobox references

See also

References
  1. Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, Florida: CRC Press, pp. 3–446, ISBN 0-8493-0594-2
  2. Peng, Qi; Yang, Min; Wang, Wei; Han, Lili; Wang, Guannan; Wang, Pengyue; Zhang, Jie; Song, Fuping (2014-12-20). "Activation of gab cluster transcription in Bacillus thuringiensis by γ-aminobutyric acid or succinic semialdehyde is mediated by the Sigma 54-dependent transcriptional activator GabR". BMC Microbiology. 14 (1): 306. doi:10.1186/s12866-014-0306-3. ISSN 1471-2180. PMC 4279683. PMID 25527261.
  3. Struys, E. A.; Jansen, E. E. W.; Gibson, K. M.; Jakobs, C. (December 2005). "Determination of the GABA analogue succinic semialdehyde in urine and cerebrospinal fluid by dinitrophenylhydrazine derivatization and liquid chromatography–tandem mass spectrometry: Application to SSADH deficiency". Journal of Inherited Metabolic Disease. 28 (6): 913–920. doi:10.1007/s10545-005-0111-0. ISSN 0141-8955. PMID 16435183. S2CID 9956364.


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