Like a Key in the Lock Cepafungin I Fits into a Pocket of the Proteasome (image) Technische Universitaet Muenchen Share Print E-Mail Caption Molecules which lock the vitally important activity of the proteasome are promising candidates for new anti-cancer medicines. Cepafungin I, a poison produced by the bacterium Photorhabdus luminescens, turned out to outperform even glidobactin A, the strongest proteasome blocker so far. Credit Chair for Biochemistry, Technische Universitaet Muenchen Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.