The Discovery of GFAJ-1

The six main elements of the NASA writing task are carbon, hydrogen, oxygen, nitrogen, phosphorus, sulfur. (NASA) According to biologists, life can not exist without all six elements. When NASA published a study in December 2010, the biologist suddenly became confused. This is the discovery of microorganisms close to phosphorus, which can maintain life. This unique microbial name is GFJ - 1 of the Halomonadaceae family. Isolating GFAJ - 1 is its ability to produce cellular components from arsenic rather than phosphorus.

GFAJ-1 contains very high levels of arsenic and can live on medium without added phosphorus, but since growth is very slow, I will use the term "tolerance". If phosphorus is added, it grows faster, and if both arsenic and phosphorus are constrained, it will not grow. After separating this miraculous organism, scientists began to investigate whether it really absorbed arsenic. According to their analysis, they believe that GFAJ - 1, including its DNA, maintains arsenic toxicity by including arsenic instead of phosphorus. Soon, some scientists opposed this hypothesis. And it was published in a paper as a technical review. They pointed out that the chemicals used were polluted with phosphorus and may become an additional source of GFAJ - 1. Furthermore, due to the stimulatory effect of arsenic on the so-called phosphorous anabolic pathway, other microorganisms have been shown to grow under hypophosphorous conditions, usually in the presence of arsenic.

In addition, microorganisms have the opportunity to stay in arsenic in toxic, dark caves or badly poisonous puddles and do all the things GFAJ-1 is supposed to do. . We have not found it yet, that is Redfield and many other critics have said. However, as pointed out by some of my readers and many observers of the great failure of GFAJ - 1, critiques have some very harmful tips. - The attempt to forge Fram and it is meaningless and foolish. Indeed, there is no way to deal with scientists in academic discussion. This is one thing when scientists do sneaky nonsense about puzzles in the world of science, but most Wolf - Simon made mistakes as she was thrown out of the boat soon.