Enantiomer
Enantiomer — One of two stereoisomers that are mirror images of each other but cannot be superimposed. L- and D-amino acids are enantiomeric pairs.
What Is an Enantiomer?
Enantiomers are non-superimposable mirror-image molecules with identical physical and chemical properties except for their interaction with polarized light and chiral environments (enzymes, receptors). L- and D-amino acids are enantiomers. An all-D peptide (mirror-image) is the enantiomer of the natural all-L peptide and is invisible to proteases that evolved to recognize L-chirality.
Applications
- Mirror-image peptides: All-D enantiomers are completely protease-resistant with extended half-life
- Mirror-image phage display: Screen against D-protein target, then synthesize the D-peptide hit for L-target binding
- Chiral HPLC: Separates L/D peptide enantiomers for racemization detection
Frequently Asked Questions
What is Enantiomer?
One of two stereoisomers that are mirror images of each other but cannot be superimposed. L- and D-amino acids are enantiomeric pairs.
Why is Enantiomer important in peptide research?
Enantiomer is a fundamental concept in chemistry as it relates to peptide science. It directly influences experimental design, compound characterization, and the reliability of research outcomes across biochemistry and molecular biology disciplines.