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.
名称: YES complex / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all 詳細: Hexameric complex of E. coli MraY dimer bound to two molecules of Protein E (ID21), stabilized by E. coli SlyD
分子量
理論値: 140.32 KDa
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超分子 #2: Lysis Protein E
超分子
名称: Lysis Protein E / タイプ: complex / ID: 2 / 親要素: 1 / 含まれる分子: #2 / 詳細: Protein E from ID21 phage
タイプ: MAXIMUM LIKELIHOOD / ソフトウェア - 名称: cryoSPARC (ver. v3.2.0+210817)
最終 角度割当
タイプ: MAXIMUM LIKELIHOOD / ソフトウェア - 名称: cryoSPARC (ver. v3.2.0+210817)
最終 3次元分類
クラス数: 4 / 平均メンバー数/クラス: 69806 / ソフトウェア - 名称: cryoSPARC (ver. v3.2.0+210817) 詳細: Two classes had about 100,000+ particles, one had about 37,000 and the final class about 5,000