White Crystalline Hydrophobic Amino Acid

This page is the CodyCross answer for the clue below from Hobbies, Group 1413, Puzzle 1 (Writing Music).

Question is: White Crystalline Hydrophobic Amino Acid

and the answer is: LEUCINE

Word Meaning:

LEUCINE — (biochemistry) An essential amino acid, C₆H₁₃NO₂, isomeric with isoleucine, found in most animal proteins; it is essential for growth in children.

Definitions from Wiktionary.