Posts Tagged ‘brownian motion’

Studying Protein Behavior As Nature Intended

 :: Posted by American Biotechnologist on 03-14-2010

Stanford chemists W. E. Moerner and Randall Goldsmith have recently published a paper in Nature Chemistry (Nature Chemistry 2, 179 – 186, 2010) describing a technique that enables scientists to examine protein behavior in solution without significantly altering the molecule through immobilization. As Louis Bergeron explains, “Observing molecules one at a time is valuable because it lets researchers get a clear picture of that molecule’s changing behavior over time, without the picture being confused by the presence of other molecules.” Bergeron goes on to quote Goldsmith who says that this is significant because “up until now, researchers have had to remove a molecule from its normal environment – typically a solution such as the bloodstream or the fluids inside a cell – and basically staple it to some surface such as a glass slide or a large plastic bead, or imbed it in a synthetic polymer to observe it.”

The machine used in the study is known as the Anti-Brownian Electrokinetic (ABEL) trap which works by cancelling out a molecule’s Brownian Motion (remember physics 101…those were the days!). There are only 3 ABEL traps in existence world-wide.

As I’ve discussed several times on the American Biotechnologist blog, I believe that a more holistic approach towards biological research such as the “omics” revolution is a healthier way of studying science and will lead to a richer set of observations over time. Protein chemistry can be a particularly difficult nut to crack as it is challenging to study the physical characteristics of proteins without removing them from their natural environment. This latest study is a feather in the cap of protein chemists and should be given recognition by fellow protein scientists interested in the “omics” revolution.

I’d love to see more of these types of studies. Wouldn’t you?