Pyrrolysine

Pyrrolysine

Names
IUPAC name Pyrrolysine[1]
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 Y
3D model (JSmol)	Interactive image Zwitterion: Interactive image
ChEBI	CHEBI:21860 N
ChemSpider	4574156 Y
KEGG	C16138 Y
PubChem CID	5460671
UNII	H3214Y96LP Y
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 Y Key: ZFOMKMMPBOQKMC-KXUCPTDWSA-N Y 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). N verify (what is YN ?) Infobox references

Pyrrolysine (symbol Pyl or O;^[2] encoded by the 'amber' stop codon UAG) is an α-amino acid that is used in the biosynthesis of proteins in some methanogenic archaea and bacteria;^[3][4] it is not present in humans. It contains an α-amino group (which is in the protonated –NH⁺
₃ form under biological conditions) and a carboxylic acid group (which is in the deprotonated –COO⁻ form under biological conditions). Its pyrroline side-chain is similar to that of lysine in being basic and positively charged at neutral pH.^{[citation needed]}