Nomenclature	FFA1	FFA2	FFA3
Other names	GPR40 (Sawzdargo et al., 1997)	GPR43 (Sawzdargo et al., 1997)	GPR41 (Sawzdargo et al., 1997) LSSIG (Senga et al., 2003)
Ensembl ID	ENSG00000126266	ENSG00000126262	ENSG00000185897
Principal transduction	Gq/11 (Briscoe et al., 2003; Itoh et al., 2003; Stoddart et al., 2007)	Gq/11, Gi/o (Brown et al., 2003; Le Poul et al., 2003; Nilsson et al., 2003)	Gi/o (Brown et al., 2003; Le Poul et al., 2003; Stoddart et al., 2007)
Selective agonists	Linoleic acid (Briscoe et al., 2003); Itoh et al., 2003), GW9508 (pEC50 7.3; Briscoe et al., 2006; Sum et al., 2007), Cpd B (pEC50 6.1; Tan et al., 2008)	(S)-2-(4-chlorophenyl)-N-(5-fluorothiazol-2-yl)-3-methylbutanamide (pEC50 6.4; Lee et al., 2008)	–
Selective antagonists	GW1100 (Briscoe et al., 2006; Stoddart et al., 2007)	–	–