National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
GM114611
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
GM105385
米国
引用
ジャーナル: Science / 年: 2023 タイトル: The mechanism of the phage-encoded protein antibiotic from ΦX174. 著者: Anna K Orta / Nadia Riera / Yancheng E Li / Shiho Tanaka / Hyun Gi Yun / Lada Klaic / William M Clemons / 要旨: The historically important phage ΦX174 kills its host bacteria by encoding a 91-residue protein antibiotic called protein E. Using single-particle electron cryo-microscopy, we demonstrate that ...The historically important phage ΦX174 kills its host bacteria by encoding a 91-residue protein antibiotic called protein E. Using single-particle electron cryo-microscopy, we demonstrate that protein E bridges two bacterial proteins to form the transmembrane YES complex [MraY, protein E, sensitivity to lysis D (SlyD)]. Protein E inhibits peptidoglycan biosynthesis by obstructing the MraY active site leading to loss of lipid I production. We experimentally validate this result for two different viral species, providing a clear model for bacterial lysis and unifying previous experimental data. Additionally, we characterize the MraY structure-revealing features of this essential enzyme-and the structure of the chaperone SlyD bound to a protein. Our structures provide insights into the mechanism of phage-mediated lysis and for structure-based design of phage therapeutics.
FKBP-typepeptidyl-prolylcis-transisomeraseSlyD / PPIase / Histidine-rich protein / Metallochaperone SlyD / Rotamase / Sensitivity to lysis protein D / WHP