Pyrrolysine
| Names | |
|---|---|
| IUPAC name
Pyrrolysine | |
| Systematic IUPAC name
N6-{[(2R,3R)-3-methyl-3,4-dihydro-2H-pyrrol-2-yl]carbonyl}-L-lysine | |
| Other names
(2S)-2-amino-6-{[(2R,3R)-3-methyl-3,4-dihydro-2H-pyrrole-2-carbonyl]-amino}-hexanoic acid N6-(4-methyl-1,2-didehydropyrrolidine-5-carboxyl)-L-lysine monomethylamine methyltransferase cofactor lysine adduct | |
| Identifiers | |
3D model (JSmol) |
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CompTox Dashboard (EPA) |
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| Properties | |
| C12H21N3O3 | |
| Molar mass | 255.313 g/mol |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
Pyrrolysine (symbol Pyl or O), encoded by the 'amber' stop codon UAG, is a proteinogenic amino acid that is used in some methanogenic archaea and in bacteria. It consists of lysine with a 4-methylpyrroline-5-carboxylate in amide linkage with the εN of the lysine. Its pyrroline side-chain is similar to that of lysine in being basic and positively charged at neutral pH.