Body biological clock of 2.5 billion years old

British Daily Mail magazine reported on May 17 that British scientists have discovered the biological clock mechanism - controlling human sleep and causing hourly syndrome, with a history of 2.5 billion years. year old.

Akhilesh Reddy of Cambridge University (UK) discovered an enzyme called Peroxide reductase . This enzyme works in circulation for 24 hours, even in the dark.

The researchers also discovered the same enzyme in mice, fruit flies, plants, fungi, algae, bacteria and even bacteria. In the absence of sunlight, peroxide reductase can also maintain time in all of these organisms. This is the main feature of the biological clock.

Conducting the sequence analysis of this enzyme, they found it appeared 2.5 billion years ago, when the Earth was in the period of great oxidation events. Plants start through the role of photosynthesis to release oxygen into the air.

Reddy said that Peroxide reductase can maintain primitive cells to avoid injury when the daytime photosynthesis peaks and releases oxygen the most.