Sunday, May 23, 2010

Dieta Wedlug Grupy Krwi

"Look, it is replicating, is alive! Is alive! "

Hello again.


guess by now have heard all the news of the development of artificial bacteria at the hands of Craig Venter Institute. But seen as explained by the news media in some consider it would be interesting to explain more about this breakthrough.

The first course of basic cellular and molecular biology. Eduardo Punset would say "The ceeelulaa ..." is the least autonomous biological unit. A cell is composed of a lipid membrane that isolates the environment and limited components. Within this membrane are machinery cell, this machinery are proteins, organelles and the genetic code. In this case it is a bacteria that is easier to level a eukaryotic cell structure (fungi, plants and animals). The bacterium lacks organelles is an aqueous medium with proteins dissolved in a chromosome and maybe 1 or more plasmids, all surrounded by 1 or more structures that surround and separate the medium. Proteins are machines that perform basic operations that allows you to stay alive and make proteins, absorb nutrients or replicate. Plasmids are circular units of double-stranded DNA that contain genes essential for the bacteria that provide tools for withstand adverse conditions, compete with other bacteria, colonize environments or cause damage to body parasites. The bacterial chromosome contains essential genes needed by the cell to grow and proliferate. That is, level with the instructions for the cell to manufacture the equipment needed to perform the functions required to perpetuate itself. DNA consists of 4 basic biochemical entities are nucleotides, these are adenine, guanine, cytosine and thymine which are arranged in a sequence of several hundreds or even thousands that make up the so-called genes. Genes contain the information necessary to build a protein with a function X is the set that forms these the genome that defines the activities of the cell.

After this brief introduction will explain the progress that is developed by Craig Venter Institute. Ara now 2 years Craig Venter came to Valencia for the chairs Santiago Grisolia and there attended the three lectures he gave, a man who is not easily forgotten. We gave a talk on the work currently being developed that is to travel by sailboat collecting water samples around the world (really hard work, do not you think?) And his school. Among other things he told his project to synthesize a chromosome minimum (ie minimum to have a functional bacteria). Y that is what they have done. They created life, just been created using a simple way to put the software. Have synthesized a bacterial chromosome using the knowledge we have on the genome of a chemical. Subsequently insert the synthetic chromosome into a cell that previously withdrew its chromosome provides lipid envelope and the enzymatic machinery necessary for its viability. Ie have only made the information necessary for the functioning of the cell but a cell per se. The applications of this development are many but also controversial from a certain point of view. From a practical point of view this development can help advance the field of synthetic biology and time in the field of bioremediation, improvement of industrial processes or production of biofuels to say a few. But it also has its shadows as I recall it was a representative of the International Bioethics Committee who said that these organisms pose a risk to the environment and this technology pose a major threat in relation to bioterrorism.

Additionally this development raises again if science is not surpassing boundaries should not pass ... but I will leave that to philosophers.

Now I have to leave you, I'm supposed to studying for exams.
Tzun.
P.D. Cualquier duda o sugerencia que tengáis dejadla en los comentarios y la responderé tan pronto me sea posible.