Serine
Amino acid / From Wikipedia, the free encyclopedia
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Serine (symbol Ser or S)[3][4] 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.
Quick Facts Names, Identifiers ...
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Names | |||
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IUPAC name
Serine | |||
Other names
2-Amino-3-hydroxypropanoic acid | |||
Identifiers | |||
3D model (JSmol) |
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ChEBI |
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ChEMBL |
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ChemSpider | |||
DrugBank |
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ECHA InfoCard | 100.000.250 | ||
EC Number |
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KEGG | |||
PubChem CID |
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UNII |
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CompTox Dashboard (EPA) |
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Properties[1] | |||
C3H7NO3 | |||
Molar mass | 105.093 g·mol−1 | ||
Appearance | white crystals or powder | ||
Density | 1.603 g/cm3 (22 °C) | ||
Melting point | 246 °C (475 °F; 519 K) decomposes | ||
soluble | |||
Acidity (pKa) | 2.21 (carboxyl), 9.15 (amino)[2] | ||
Supplementary data page | |||
Serine (data page) | |||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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