Chirality yog ib qho cuab yeej geometric ntawm qee tus qauv thiab cov ions. Ib tug chiral molecule / ion yog tsis-superimposable rau nws daim iav duab. Lub xub ntiag ntawm qhov chaw asymmetric carbon yog ib qho ntawm ntau yam ntxwv ntawm cov qauv uas ua kom muaj kev sib tw nyob rau hauv cov organic thiab cov qauv tshuaj lom neeg.
Cov neeg enantiomers feem ntau yog xaiv los ua cov right-handed lossis left-handed. Kev sib tw yog ib qho tseem ceeb thaum sib tham txog cov stereochemistry hauv cov organic thiab inorganic chemistry. Lub tswvyim yog qhov tseem ceeb ntawm qhov tseem ceeb tshaj vim tias feem ntau biomolecules thiab pharmaceuticals yog chiral.
Muaj ntau cov kab mob biologically muaj cov roj ntsha, nrog rau cov amino acids uas muaj tshwm sim (cov khoom vaj tsev ntawm cov nqaij) thiab cov suab thaj. Hauv kev txhim kho kab mob, feem ntau ntawm cov kev sib txuas lus no yog tib lub chirality: feem ntau cov amino acids yog levorotatory (l) thiab suab thaj yog dextrorotatory (d). Cov roj ntsha uas tshwm sim muaj tshwm sim yog tsim los ntawm L-amino acids thiab paub tias yog cov nqaij ua cov laug-tso; Daus cov kabmob d-amino acids rarer tsim cov tshuaj proteins uas muaj cai.

Qhia tag nrho 4 tau