Tuesday, 28 March 2023
The interactions between DNA and proteins
This week, I’d like to say a few words about an important change from the way that the interactions between DNA and proteins were long thought of.
We have now come a long way from the simplistic linear understanding that we had from the start of genetics, in which the “genetic program” of DNA was copied into messenger RNA which then exited the cell nucleus and was translated into proteins in the cytoplasm. As we have just seen, the reality is more of a complex metabolic network subject to a circular logic that assumes no “program” and hence no absolute starting point. In other words, we must now discard this “genocentric” heritage according to which DNA is the foundation of everything, because it provides the building plans. (more…)
From the Simple to the Complex | Comments Closed
Monday, 13 August 2012
Genes to Cognition Online
There are not too many web sites about the human brain that are structured according to the human organism’s levels of organization, so that readers always keep this fundamental concept in mind. That is understandable, given the all the extra work involved in writing the content for such a site. But a handful of writers have been energetic enough, or foolish enough, to attempt this approach, including yours truly, with The Brain from Top to Bottom.
Because web sites like mine are so scarce, I would feel remiss if I did not let my readers know about another one that has been around for a few years now. It is called Genes to Cognition Online (first link below). (more…)
From the Simple to the Complex | Comments Closed