7TM-GPCR list
Androgen Receptor Gene Mutations DB
GPCR Database
GPCR Interacting Proteins
GPCR Pattern Recognition
GRIFFIN - GPCR analysis
Human Plasma Membrane Receptome (mapped w/ligands)
IUPHAR Guide to Pharmacology
Kinase.com
KinBase at Sugen/Salk
Ligand-Gated Ion Channel DB
Nuclear Receptors Database
Nuclear Receptor Resource
Nuclear Receptor Signaling Atlas
Phospho.ELM, phosphorylation sites
PDTD - Potential Drug Target DB
Scansite - search for phosphorylation sites
Signaling Gateway