Skip navigation

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Your search for ISOLEUCINE OR PHENYLALANINE OR THREONINE OR GLYCINE OR LYSINE OR VALINE OR MAGNESIUM CATION OR SERINE OR ARGININE OR GLYCERIN OR LEUCINE OR ALANINE OR SODIUM CATION OR PHOSPHORIC ACID OR METHIONINE OR TRYPTOPHAN OR PROLINE OR CHLORIDE ION OR HISTIDINE OR CYSTEINE OR CALCIUM CATION did not return any results.

Your search may be too specific. Try using fewer or broader search words.