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, 31 October 2022
A set of stunning animations
Today I want to let you know about a set of stunning animations produced by the DNA Learning Center, which was founded by the Cold Spring Harbor Laboratory in 1988 to educate the general public about issues related to genetics. The DNA Learning Center’s Biology Animations web page contains some 50 animations about DNA, RNA, proteins and their complex interactions. Most of these animations are just a few minutes long, and all of them are are so realistic that they take your breath away—a far cry from the 2D and 3D animations that you may have seen where everything is smooth and steady and all the colours are uniform. Instead, in these animations, everything moves and pulsates, as if you were moving through the living molecular jungles inside the tiniest human cells. (more…)
From the Simple to the Complex | Comments Closed