Peptide Regulating Wakefulness; Anagram of Nix Roe

This page is the CodyCross answer for the clue below from A Sweet Life, Group 1083, Puzzle 2 (Homemade Fudge).

Question is: Peptide Regulating Wakefulness; Anagram of Nix Roe

and the answer is: OREXIN

Word Meaning:

OREXIN — (biochemistry) Either of two neuropeptide hormones found in vertebrates; the hypocretins.

Definitions from Wiktionary.