Powering up the circadian rhythm

An American research team is the first to discover a protein that controls the strength of body’s circadian rhythms. In new work, the team analyzed levels and molecular characteristics of REV-ERB? in the livers of mice throughout the day. They found that after its levels peaked during the day, two proteins, CDK1 and FBXW7, interacted with REV-ERB? to help reduce its levels to a low point by the middle of the night.