YM-750 is a potent acyl-CoA:cholesterol acyltransferase (ACAT) inhibitor (IC50=0.18 μM). ACAT catalyzes the formation of cholesteryl esters from cholesterol and long-chain fatty-acyl-coenzyme A.

[Gly11] Substance P

Mastoparan X is a GTP-binding regulatory protein (G protein)-activating peptide, and a tetradecapeptide from wasp venom. Mastoparan X acts function by the direct activation of G protein that couple to phospholipase C to cause secretion from various kinds of cells.