February 28, 2012

Some Bacteria Attack Using Spring-Loaded Poison Daggers

Caltech, California Institute of Technology


Bacteria have evolved different systems for secreting proteins into the fluid around them or into other cells. Some, for example, have syringe-like exterior structures that can pierce other cells and inject proteins. Another system, called a type VI secretion system, is found in about a quarter of all bacteria with two membranes. Despite being common, researchers have not understood how it works. Now a team, co-led by researchers at the California Institute of Technology (Caltech), has figured out the structure of the type VI secretion system apparatus and proposed how it might work—by shooting spring-loaded poison molecular daggers.

Read Full Article ››

TAGGED: Bacteria


October 18, 2013
Sour Beers Are Coming, Thanks to Bacteria
Michaeleen Doucleff, NPR
Move over, bitter IPAs and chocolaty stouts. There's a new kid on the craft brewing block, and it's going to knock your salivary glands into action.It's called "sour beer." When you take a sip, it's like biting into a Granny... more ››