O-Acetylserine is an α-amino acid with the chemical formula HO2CCH(NH2)CH2OC(O)CH3. It is an intermediate in the biosynthesis of the common amino acid cysteine in bacteria and plants. O-Acetylserine is biosynthesized by acetylation of the serine by the enzyme serine transacetylase. The enzyme O-acetylserine (thiol)-lyase, using sulfide sources, converts this ester into cysteine, releasing acetate:[1]
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IUPAC name
O-Acetyl-L-serine
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Systematic IUPAC name
(2S)-3-(Acetyloxy)-2-aminopropanoic acid | |
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3D model (JSmol)
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UNII | |
CompTox Dashboard (EPA)
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Properties | |
C5H9NO4 | |
Molar mass | 147.13 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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- HO2CCH(NH2)CH2OH → HO2CCH(NH2)CH2OC(O)CH3
- HO2CCH(NH2)CH2OC(O)CH3 → HO2CCH(NH2)CH2SH