Salk Team First to Discover Protein that Controls the Strength of Body's Circadian Rhythms (image) Salk Institute Share Print E-Mail Caption Scientists at the Salk Institute and collaborators have discovered a key player -- a protein called REV-ERBα -- that controls the strength of this circadian rhythm in mammals. The discovery is unusual in the field, as most circadian genes and proteins only shift the timing or length of the daily cycle. Credit Salk Institute Usage Restrictions with credit and related coverage Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.