RacGTPase fragment is a peptide with the sequence H2N-Val-Phe-Asp-Glu-Ala-Ile-Arg-Ala-Val-OH, MW= 1019.15. Rac is a subfamily of the Rho family of GTPases, small signaling G proteins (more specifically a GTPase).
1-Palmitoyl-2-stearoyl-rac-glycerol, a diacylglycerol, features palmitic acid at the sn-1 position and stearic acid at the sn-2 position. This compound plays a role in identifying the fatty acyl chain properties of diacylglycerols that activate the ADP-ribosylation factor 1 GTPase-activating protein (ARF1 GAP).