Stereochemistry in biomolecules questions
1. (a) Draw 3-D representations of the two enantiomers of cysteine that show clearly that they are mirror images of each other. (b) Identify, with a reason, which of the two configurations you have drawn represents the only one found in proteins. (c) List all the 2-amino acids in Section 33 of the data booklet that either contain no chiral carbon atoms or more than one chiral carbon atom. 2. Cis-retinal is produced...