A possible binding site for β-ionone in OR51E2.

OR51E2 is a receptor for propionic and acetic acids, and its agonists tend to smell vinegar-like. Other short chain fatty acids (SCFAs) with chains of up to 5 carbon atoms activate this protein progressively less strongly with increasing chain length, and SCFAs of 6 carbons or more are non-agonists and have odors that are more […]

Read More