ALIPHATIC AMINO ACIDS CH CH, CH CH CH CH. 9 CH, CH CH, CHa-CH HN-C-COO HaN-C-COO HN-C-C0O HaN-C-COO HN-C-CO0- H H H H H Glycine (Gly)G Alanine (Ala)A Valine (Val)V Leucine (Leu)L Isoleucine (le) AMINO ACIDS WITH HYDROXYL-OR SULFUR-CONTAINING SIDE CHAINS CHa CYCLIC AMINO ACID SH CH2 CH, H2 HCOH CH, CH.CH HN-C-COO- H,N-C-COO HN-C-C0O- HN-C-COO HN-C-C0O H H H H H Serine (Ser)S Cysteine (Cys)c Threonine(Thr)T Methionine (Met)M Proline (Pro)P