Abstract
Several biological processes related to metabolism and cell division are controlled by biochemical oscillators that underpin circadian clock systems. The function of such circadian oscillators is modulated by rhythmic, phosphorylation-dependent interactions between proteins of the clock system. The self-sustained circadian clocks oscillate through different phases characterized by distinct phosphorylation states (1–3). Understanding the mechanisms underlying this process has been very challenging. A new study in PNAS (4) provides intriguing data implicating changes in intrinsic protein dynamics in the modulation of the circadian timing and rhythms.
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