Relaxin receptor
The relaxin receptors are a subclass of four closely related G protein-coupled receptors that bind relaxin peptide hormones.
Below is list of human relaxin receptors, their endogenous peptide hormones, and what down stream enzymes are activated or inhibited by the receptor.
| receptor/gene | ligands | activates | inhibits |
| relaxin 1, relaxin 2, relaxin 3 | adenylate cyclase, protein kinase A, protein kinase C, phosphatidylinositol 3-kinase, extracellular signal-regulated kinases | ||
| relaxin 1, relaxin 2, insulin-like 3 | adenylate cyclase | ||
| relaxin 3 | Erk1/2 signaling | adenylate cyclase | |
| relaxin 3, insulin-like 3 | adenylate cyclase |