However, one should note that the growth of knowledge in this field is in width and not in depth. It is the same situation as with computers. Their power is growing exponentially, as a result of ever refinement of the same underlying technology. The mission of physicists in molecular biology must be to dig deeper, not wider. The deciphering of the genome is a problem where a physics background and training would be very useful.
Proteins do the work and communication inside a living cell.
DNA keeps the memory which is read by the proteins. Lipids makes the membranes that confine life to cells of size down to 0.001 mm. We want to understand these players, and how they interact with each other. Proteins Our interest in this field concerns proteins. They do their work by changing between different foldings.