People with mutations in either of two proteins known as polycystin-1 and polycystin-2 develop polycystic kidney disease. Studies on the nematode worm and the frogXenopus laevisare now helping researchers to work out the normal functions of these proteins. It seems that polycystin-1-related proteins act as receptors, which regulate the activity of channels containing polycystin-2-related proteins.
- Scott W. Emmons
- Stefan Somlo