ENDONET: List of messengers/hormones and their receptors
Extracted from the EndoNet database, the list exhibits numerous ligand-receptor pairs, including their links to EndoNet, UniProt and HumanPSD.
Dönitz, J. and Wingender, E. (2014) EndoNet: an information resource about the intercellular signaling network.
BMC Syst Biol. 8, 49. Link
and go here to the full list.