TARGETS
GPCRs a	Enzymes b
RXFP1 receptor	ERK1/2
RXFP2 receptor	MMP2
RXFP3 receptor
RXFP4 receptor

LIGANDS
cAMP	INSL5, insulin‐like peptide 5
A(4‐24)(B7‐24) H2 relaxin	ML290
B7‐33(H2) relaxin	Orexin
B‐R13/17K H2 relaxin	Relaxin
CRF,corticotropin‐releasing factor	Relaxin‐3
GLP‐1	Relaxin‐3/INSL5, R3/I5
INSL3, insulin‐like peptide 3	R3(BΔ23‐27)R/I5 chimeric peptide
INSL3: B10‐24/B1‐31, INSL3 B‐chain dimer analogue 8

These Tables list key protein targets and ligands in this article which are hyperlinked to corresponding entries in http://www.guidetopharmacology.org, the common portal for data from the IUPHAR/BPS Guide to PHARMACOLOGY (Southan et al., 2016), and are permanently archived in the Concise Guide to PHARMACOLOGY 2015/16 (^a,bAlexander et al., 2015a,b).