0608_KNOTS [Knotty proteins present new puzzle]

The molecular structures of the protein Ubiquitin C-terminal hydrolases from, left to right, humans, yeast and   malaria-causing plasmodium falciparum cells form the same knotting motif, according to research by scientists associated with the Center for Theoretical Biological Physics. In all three cases, the proteins form 52 knots with nearly the same sizes and positions with respect to a linear map of their polypeptide chains. Courtesy of the Center for Theoretical Biological Physics

About Mike Williams

Mike Williams is a senior media relations specialist in Rice University's Office of Public Affairs.