Molecular Clocks and Light Signalling
Novartis Foundation![Molecular Clocks and Light Signalling](https://support.digitalhusky.com/media/annotations/sorted/996/9968049/CHSBZCOP039968049.jpg)
The ability at the molecular level to keep track of time is a property shared by organisms ranging from the simplest unicells to humans. The primary feature of these biological clocks is their ability to entrain to environmental stimuli. The dominant stimulus comes from environmental light cues, which requires the existence of photopigments sensitive to light. The exact identity of the molecules involved in circadian photoreception has remaine...