- The Amino Acid Repository from the Image Library of Biological Molecules. Contains a great data base of properties about amino acids.
- Amino Acid Information form Rockefeller University.
- Chin, J. et al. An expanded eukaryotic genetic code. Science. 301. pg 964 (2003)
- Schultz, P. et al. JACS, last week January, 2003
- A New Twist on Chirality (how homochirality in amino acids may have developed). Science. 292, pg 2021 (2001)