2016年5月5日星期四

Study on the origin and development of genetic code

Nature is constantly evolving - its only limit is dependent on the viability of threatened species variation. Origin and Development of the genetic code, to explain the evolution of life is very important. In a recent study of "Science Advances" published, a group of biologists specializing in this field, explains the genetic code of a limit for further development, we know that the genetic code is a set of common rules, all the earth organisms with which to translate nucleic acid (DNA and RNA) gene sequence into an amino acid sequence of the protein composition, perform cell function.

Under the joint guidance of Fyodor Institute of Biomedical (IRB Barcelona) ICREA researcher Lluís Ribas de Pouplana and genomic control center of A. Kondrashov of the team of scientists has demonstrated that the genetic code evolved to include up to 20 amino acids, it cannot grow further, because the transfer RNA molecule functional limitations - transfer RNA molecule that is the language translation and its encoded protein genes. This will happen in life increased by 30 million years ago complexity stopped before bacteria, archaea and eukaryotes evolved independently class, because all living things use the same genetic code, proteins produced by genetic information.

The study authors explain that the machine which translates genes into proteins does not recognize more than 20 kinds of amino acids, as it would confuse them. It continues to lead to protein mutation, causing incorrect translation of genetic information and having a "catastrophic consequences". The researchers said, “Based on the genetic code, protein synthesis is a defining characteristic of biological systems. Faithful translation of the information is vital." the transfer of the cancer cells can be the recent gene soul.

More details can be found here: http://www.cusabio.com/Recombinant-Protein/Recombinant-human-HLA-DMA-protein-11089636.html

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