The tardigrade, The most indestructible creature of the world

130 Views | Oct 8, 2019

The tardigrade, The most indestructible creature of the world

Scientists have finally solved the mystery of the tardigrada, a microscopic "cub" that can survive even though it is exposed to a 25-hour radiation dose at the site of the Chernobyl nuclear disaster.

According to information, the cub, or algae pig, can survive in various harsh environments, endure a thousand times more nuclear radiation than other animals and can withstand temperatures up to 150 degrees Celsius.

According to a study published in eLife magazine, the cub can survive in these hostile environments because of its ability to create a cloud-like protease shield, also known as a spoiler.

By analyzing this protein, the scientists found that it bound to the nucleus of the cell containing DNA and created a protective cloud around it, such as a shield.

Molecular biologist James Kadunaga and his colleagues at the University of California at San Diego have developed three different methods to purify the "alteration" protein of an aquatic bear to study its functioning at the molecular level.

"We now have a molecular explanation of how proteins can protect cells from X-rays," Kadunaga told Science Alert.

"We can see that the protein shield contains two parts, the first is linked to chromatin (the name given to the DNA habitat in the cells), and the second is a cloud that protects the DNA from the roots of the cells. hydroxyl (highly reactive compounds that can be generated in cells by ionizing radiation). "

Kadunaga and his team believe that the protein shield may not have been developed to resist radiation, but that it is a secondary benefit of evolution to survive in dry environments.

The research was published in the scientific reports.

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