For the French wine grape, see Sérine. For the toxic substance, see Sarin.
IUPAC name Serine
Systematic IUPAC name 2-Amino-3-hydroxypropanoic acid
CAS Number
- L: 56-45-1
- D/L: 302-84-1
- D: 312-84-5
3D model (JSmol)
- L: Interactive image
- D/L Zwitterion: Interactive image
ChEBI
- L: CHEBI:17115
ChEMBL
- L: ChEMBL11298
ChemSpider
- L: 5736
- D/L: 597
- D: 64231
DrugBank
- L: DB00133
ECHA InfoCard
100.000.250
EC Number
- L: 206-130-6
IUPHAR/BPS
- L: 726
KEGG
- L: C00065
- D: C00740
PubChem CID
- L: 5951
- D/L: 617
- D: 71077
UNII
- L: 452VLY9402
- D/L: 00PAR1C66F
- D: 1K77H2Z9B1
CompTox Dashboard (EPA)
- L: DTXSID60883230
InChI
InChI=1S/C3H7NO3/c4-2(1-5)3(6)7/h2,5H,1,4H2,(H,6,7)/t2-/m0/s1Key:MTCFGRXMJLQNBG-REOHCLBHSA-N
D/L: Key:MTCFGRXMJLQNBG-UHFFFAOYSA-N
D: Key:MTCFGRXMJLQNBG-UWTATZPHSA-N
L: C(C@@HN)O
D/L Zwitterion: C(C@@H[NH3+])O
Chemical formula
C3H7NO3
Molar mass
105.093g·mol
Appearance
white crystals or powder
Density
1.603 g/cm (22°C)
Melting point
246°C (475°F; 519K) decomposes
Solubility in water
soluble
Acidity (pKa)
2.21 (carboxyl), 9.15 (amino)
Supplementary data page
Serine (data page)
Except where otherwise noted, data are given for materials in their standard state (at 25°C [77°F], 100kPa).
Infobox references
Serine /ˈsɪəriːn/ (symbol Ser or S) is an α-amino acid that is used in the biosynthesis of proteins. It contains an α-amino group (which is in the protonated −NH 3 form under biological conditions), a carboxyl group (which is in the deprotonated −COO form under biological conditions), and a side chain consisting of a hydroxymethyl group, classifying it as a polar amino acid. It can be synthesized in the human body under normal physiological circumstances, making it a nonessential amino acid. It is encoded by the codons UCU, UCC, UCA, UCG, AGU and AGC.