Pyrrolines, also known under the name dihydropyrroles, are three different heterocyclic organic chemical compounds that differ in the position of the double bond. Pyrrolines are formally derived from the aromate pyrrole by hydrogenation. 1-Pyrroline is a cyclic imine, whereas 2-pyrroline and 3-pyrroline are cyclic amines.
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In this Dossier
- ⭐ Core Definition: Pyrroline
- Pyrroline in the context of Pyrrolysine
Pyrroline in the context of Pyrrolysine
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 N of the lysine. Its pyrroline side-chain is similar to that of lysine in being basic and positively charged at neutral pH.
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