Pyrrolysine

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
CAS Number	448235-52-7 ;
3D model (JSmol)	Interactive image; Zwitterion: Interactive image;
ChEBI	CHEBI:21860 ;
ChemSpider	4574156 ;
KEGG	C16138 ;
PubChem CID	5460671;
UNII	H3214Y96LP ;
CompTox Dashboard (EPA)	DTXSID70420110 ;
	InChI InChI=1S/C12H21N3O3/c1-8-5-7-14-10(8)11(16)15-6-3-2-4-9(13)12(17)18/h7-10H,2-6,13H2,1H3,(H,15,16)(H,17,18)/t8-,9+,10-/m1/s1 Key: ZFOMKMMPBOQKMC-KXUCPTDWSA-N ; InChI=1/C12H21N3O3/c1-8-5-7-14-10(8)11(16)15-6-3-2-4-9(13)12(17)18/h7-10H,2-6,13H2,1H3,(H,15,16)(H,17,18)/t8-,9+,10-/m1/s1 Key: ZFOMKMMPBOQKMC-KXUCPTDWBO;
	SMILES C[C@@H]1CC=N[C@H]1C(=O)NCCCC[C@@H](C(=O)O)N; Zwitterion: O=C(NCCCC[C@@H](C(=O)[O-])[NH3+])[C@@H]1/N=C\C[C@H]1C;
Properties
Chemical formula	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). verify (what is ?) 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.