"I remember the first time I looked in a biochemistry textbook and I saw a drawing of something called a bacterial flagellum with all of its parts in all of its glory. It had a propeller and a hook region and the drive shaft and the motor and so on. I looked at that and I said that's an outboard motor. That's designed. That's no chance assemblage of parts." -- Michael J. Behe, biochemist, 2002
"In evolutionary terms, you have to explain how you can build this system gradually when there is no function until you have all those parts in place." -- Scott Minnich, molecular biologist, 2002
"In fact, what we have here is irreducible complexity all the way down." -- Jonathan C. Wells, molecular biologist, 2002
Science Daily: Life's Smallest Motor, Cargo Carrier of the Cells, Moves Like a Seesaw.
ScienceDaily (Feb. 19, 2010) — Life's smallest motor -- a protein that shuttles cargo within cells and helps cells divide -- does so by rocking up and down like a seesaw, according to research conducted by scientists at the U.S. Department of Energy's Lawrence Berkeley National Laboratory and Brandeis University.
The researchers created high-resolution snapshots of a protein motor, called kinesin, as it walked along a microtubule, which are tube-shaped structures that form a cell's "skeleton." The result is the closest look yet at the structural changes kinesin proteins undergo as they ferry molecules within cells.