Record Information
Creation date2010-04-08 22:04:47 UTC
Update date2019-11-26 02:55:42 UTC
Primary IDFDB000970
Secondary Accession NumbersNot Available
Chemical Information
FooDB NameN-Acetyl-L-serine
DescriptionAcetylation of the N-terminal amino acid (-NH2 acetylation) is a common protein modification in eukaryotes but is rarely encountered in prokaryotes. In mammalians,80 to 90 percent of the cytosolic proteins are subjected to an irreversible, cotranslational amino acid acetylation at their N-terminus. Acetylation of the N-terminal amino acid (-NH2 acetylation) is a common protein modification in eukaryotes but is rarely encountered in prokaryotes. In mammalians, 80 to 90 percent of the cytosolic proteins are subjected to an irreversible, cotranslational amino acid acetylation at their N-terminus. N-acetylated proteins are catabolized in the cytosol by the ATP-ubiquitin-dependent proteasomal pathway. Several types of aminoacylases can be distinguished on the basis of substrate specificity. Aminoacylase I (ACY1; EC, the most abundant type, is a soluble homodimeric zinc binding enzyme that catalyzes the formation of free aliphatic amino acids from N-acetylated precursors. It is encoded by the aminoacylase 1 gene (ACY1) on chromosome 3p21 that comprises 15 exons (OMIM 609924). Preferred substrates of ACY1 are aliphatic amino acids with a short-chain acyl moiety, especially N-acetyl-methionine. However, ACY1 can also catalyze the reverse reaction, the synthesis of acetylated amino acids. Functional aminoacylase I is crucial in the last step in this degradation as it catalyzes the hydrolysis of N-acetylated amino acids into acetate and the free amino acid. Although N-acetylation occurs in many metabolic pathways and N-acetylated metabolites are known to accumulate in several inborn errors, there are only a few reports on N-acetylated amino acids detected in urine. Identification of N-acetylated amino acids by routine GC-MS may be problematic for several reasons. The major problem is linked to the identification strategy itself. Identification of an unknown compound in mass spectrometry is usually based on comparison of its spectrum against a library of reference spectra. (PMID: 16465618, 16274666, 17723438). N-Acetyl-L-serine is found in watermelon.
CAS Number16354-58-8
L-serine, n-acetyl-biospider
Serine, n-acetyl-, l-biospider
Predicted Properties
Water Solubility84.6 g/LALOGPS
pKa (Strongest Acidic)3.61ChemAxon
pKa (Strongest Basic)-1.5ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area86.63 ŲChemAxon
Rotatable Bond Count3ChemAxon
Refractivity31.48 m³·mol⁻¹ChemAxon
Polarizability13.28 ųChemAxon
Number of Rings0ChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Chemical FormulaC5H9NO4
IUPAC name2-acetamido-3-hydroxypropanoic acid
InChI IdentifierInChI=1S/C5H9NO4/c1-3(8)6-4(2-7)5(9)10/h4,7H,2H2,1H3,(H,6,8)(H,9,10)
Average Molecular Weight147.1293
Monoisotopic Molecular Weight147.053157781
Description Belongs to the class of organic compounds known as n-acyl-alpha amino acids. N-acyl-alpha amino acids are compounds containing an alpha amino acid which bears an acyl group at its terminal nitrogen atom.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
Sub ClassAmino acids, peptides, and analogues
Direct ParentN-acyl-alpha amino acids
Alternative Parents
  • N-acyl-alpha-amino acid
  • Serine or derivatives
  • Beta-hydroxy acid
  • Hydroxy acid
  • Acetamide
  • Carboxamide group
  • Secondary carboxylic acid amide
  • Carboxylic acid
  • Monocarboxylic acid or derivatives
  • Organooxygen compound
  • Organonitrogen compound
  • Organic oxide
  • Organopnictogen compound
  • Alcohol
  • Organic oxygen compound
  • Carbonyl group
  • Organic nitrogen compound
  • Primary alcohol
  • Hydrocarbon derivative
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External DescriptorsNot Available
OntologyNo ontology term
Physico-Chemical Properties - Experimental
Physico-Chemical Properties - Experimental
Physical stateSolid
Physical DescriptionNot Available
Mass CompositionC 40.82%; H 6.17%; N 9.52%; O 43.50%DFC
Melting PointMp 207.6°DFC
Boiling PointNot Available
Experimental Water SolubilityNot Available
Experimental logPNot Available
Experimental pKaNot Available
Isoelectric pointNot Available
ChargeNot Available
Optical Rotation[a]22D -205 (c, 1 in MeOH)DFC
Spectroscopic UV DataNot Available
DensityNot Available
Refractive IndexNot Available
TypeDescriptionSplash KeyView
Predicted GC-MSN-Acetyl-L-serine, non-derivatized, Predicted GC-MS Spectrum - 70eV, Positivesplash10-0006-9200000000-3fdf2264d7f6bfa966aeSpectrum
TypeDescriptionSplash KeyView
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0f7k-1900000000-8fd08db8763ca780a73bSpectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0nn9-9500000000-5ed0dd34b41fd175f669Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-001i-9100000000-2e1c11fb421c1111b011Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0002-2900000000-0c8c866ca02199eba95dSpectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0zgj-9800000000-fb156ef161572da8f131Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0a4l-9100000000-a9df8ace176575dd53e5Spectrum
NMRNot Available
ChemSpider ID58744
ChEMBL IDNot Available
KEGG Compound IDNot Available
Pubchem Compound ID65249
Pubchem Substance IDNot Available
ChEBI IDNot Available
Phenol-Explorer IDNot Available
DrugBank IDDB02340
CRC / DFC (Dictionary of Food Compounds) IDBCP29-I:BOF42-P
EAFUS IDNot Available
BIGG IDNot Available
KNApSAcK IDNot Available
Food Biomarker OntologyNot Available
VMH IDNot Available
Flavornet IDNot Available
GoodScent IDNot Available
SuperScent IDNot Available
Wikipedia IDAcetylserine
Phenol-Explorer Metabolite IDNot Available
Duplicate IDSNot Available
Old DFC IDSNot Available
Associated Foods
FoodContent Range AverageReference
Biological Effects and Interactions
Health Effects / BioactivitiesNot Available
NameGene NameUniProt ID
Glycine N-acyltransferaseGLYATQ6IB77
Glycine N-acyltransferase-like protein 1GLYATL1Q969I3
Glycine N-acyltransferase-like protein 2GLYATL2Q8WU03
PathwaysNot Available
MetabolismNot Available
BiosynthesisNot Available
Organoleptic Properties
FlavoursNot Available
MSDSNot Available
Synthesis ReferenceNot Available
General ReferenceNot Available
Content Reference— Duke, James. 'Dr. Duke's Phytochemical and Ethnobotanical Databases. United States Department of Agriculture.' Agricultural Research Service, Accessed April 27 (2004).