Cell

How did early primordial cells evolve?

Four billion years ago, soon after the planet cooled enough for life to begin, primordial cells may have replicated and divided without protein machinery or cell walls, relying instead on just a flimsy lipid membrane. New ...

Feb 28, 2013
4.5 / 5 (2) 0 | with audio podcast

Cell: Protein folding via charge zippers

Membrane proteins are the "molecular machines" in biological cell envelopes. They control diverse processes, such as the transport of molecules across the lipid membrane, signal transduction, and photosynthesis. ...

Jan 18, 2013
5 / 5 (2) 0