Properties of Amino Acids

The following questions concern the configuration and properties of the twenty common amino acids. In the answer box following each question enter the three letter abbreviation for any amino acid that fits the description. If several amino acids fit the description, enter all their abbreviations. If none of the twenty acids provide an answer, enter the letter X.

1. Which if any amino acids are achiral?     ......  
2. Which if any amino acids have an R configuration?   ......  
3. Which if any amino acids have no 1º-amine functions?   ....  
4. Which if any amino acids have more than one stereogenic center?  
5. Which amino acid has the highest pI? .  .......  
6. Which amino acid has the lowest pI?   ........  




This script written by William Reusch, Dept. of Chemistry, Michigan State University. Please send comments and corrections to whreusch@pilot.msu.edu.