Protein; Helps Chemical Reactions in Living Things

This page is the CodyCross answer for the clue below from Paris, Group 258, Puzzle 4 (Foucault Pendulum).

Question is: Protein; Helps Chemical Reactions in Living Things

and the answer is: ENZYME

Word Meaning:

ENZYME — (biochemistry) A biomolecule that catalyses a biological chemical reaction: either a globular protein with this function or an RNA molecule with this function.

Definitions from Wiktionary.