Hydrodynamic Hunters

Thursday, 8 December 2016 - 3:45pm
Steve Presse', Assistant Professor, IUPUI
Refreshments at 3:45 pm in the Physics Conference Room LD 154B

The model bacterial predator, Bdellovibrio bacteriovorus (BV), has been studied for over 50 years and has the potential to purify water, degrade biofilms and serve as a living antibiotic. However, very little is known about BV's hunting strategy for bacterial prey.
This is in because the small BV moves much faster than its typical prey and appears, by eye, to collide into it at random. Indeed statistical analysis of its motion reveals that BV exhibits no obvious signatures of a targeted search for prey. Here, I will present experimental and modeling work suggesting that hydrodynamics may help guide its search for prey. If time allows, I will also discuss recent work in my group on how enzymes dissipate catalytic heat as well as work on inference from single molecules to cells.
*Physics colloquium is scheduled for 2016-17 academic year for every Thursday, 4:15 PM in LD 010. Changes to the schedule will be posted at
www.physics.