Megan Scudellari | Jul 16, 2008 | 3 min read
An ancient RNA molecule is the answer to a bacterial mystery, according to a study published in linkurl:Science;http://www.sciencemag.org/ tomorrow (July 18). Researchers have identified the binding molecule of a key messenger in bacteria, but to their surprise, the molecule was not a protein -- traditionally thought of as regulators of cellular processes -- but a unique RNA trigger. In the last six years, RNA triggers, called linkurl:riboswitches,;http://www.the-scientist.com/article/display/1