Science News Desk – By simulating conditions on the ancient Earth in the laboratory itself, scientists have found that without a certain type of amino acid, ancient proteins could not have evolved into the kind of life we know today. How amino acids shape the genetic code of archaic microorganisms. The new study shows that the creation of only certain types of amino acids was not responsible for the origin of life. Through simulation in the laboratory, they created conditions for the protein to form early in life. The results of the study shed new light on the origin of life on Earth by providing detailed information about it.
amino acids of a common ancestor
This study by a team of scientists from John Hopkins University in the US and Charles University in the Czech Republic has been published in the Journal of the American Chemical Society. “You see the same amino acids in every organism, from humans to archaea,” said Stephen Fried, a chemist at Johns Hopkins and co-author of the study. That’s because everyone on Earth is related to each other because all living things Creatures have only one ancestor.
explanation of events
The researchers wanted to explain those events to find out why that ancestor got only the amino acids it had. Scientists mimicked 4-billion-year-old protoprotein synthesis in laboratory conditions using an alternative set of amino acids that were abundant before life began on our planet.
biochemistry of protein folding
The researchers found that ancient organic compounds served to integrate amino acids that were optimal for the biochemistry of the protein folding process, suggesting that life on Earth did not thrive on only a few amino acids that were present in ancient environments. . were available, but few in particular were effective in shaping proteins to perform specific functions.
protein folding has been very useful
Through protein folding, the researchers were able to create conditions for the evolution of life on Earth from native Russia, Fiord said. The evolutionary process may have occurred even before the beginning of biology, and in the case of chemicals, the process of natural selection may have been in place, selecting those chemicals that were useful to life even before DNA.
only twenty out of hundreds
Primitive Earth had hundreds of amino acids. But all organisms use only 20 of them, which scientists have named canonical amino acids. During the first billion years, Earth was a mixture of gases including ammonia, carbon dioxide, which reacted with ultraviolet rays to form some amino acids, and the rest came from meteorites.
what first dna or protein
But still how many amino acids are made is not known and research and research is going on on this. Freud said researchers are also trying to figure out what was special about our canonical amino acids and whether they were chosen for a specific reason. But this would require a process to convert DNA RNA into proteins, whereas proteins themselves are needed to make DNA. It is a question like what came first the egg or the chicken. The researchers say that their research suggests that natural selection for the essential building blocks may have begun long before nature began its Darwinian evolutionary process.