Protein of unknown function DUF6682 / Family of unknown function (DUF6682) / Chaperone of endosialidase / Intramolecular chaperone auto-processing domain / Intramolecular chaperone auto-processing (ICA) domain profile. 類似検索 - ドメイン・相同性
Portal protein / Virion-associated phage protein / Putative tail fiber protein / Uncharacterized protein / Virion associated protein 類似検索 - 構成要素
National Natural Science Foundation of China (NSFC)
12034006
中国
National Science Foundation (NSF, China)
32071209
中国
National Natural Science Foundation of China (NSFC)
31971122
中国
National Natural Science Foundation of China (NSFC)
32200994
中国
引用
ジャーナル: J Mol Biol / 年: 2023 タイトル: Asymmetric Structure of Podophage GP4 Reveals a Novel Architecture of Three Types of Tail Fibers. 著者: Jing Zheng / Wenyuan Chen / Hao Xiao / Fan Yang / Jingdong Song / Lingpeng Cheng / Hongrong Liu / 要旨: Bacteriophage tail fibers (or called tail spikes) play a critical role in the early stage of infection by binding to the bacterial surface. Podophages with known structures usually possess one or two ...Bacteriophage tail fibers (or called tail spikes) play a critical role in the early stage of infection by binding to the bacterial surface. Podophages with known structures usually possess one or two types of fibers. Here, we resolved an asymmetric structure of the podophage GP4 to near-atomic resolution by cryo-EM. Our structure revealed a symmetry-mismatch relationship between the components of the GP4 tail with previously unseen topologies. In detail, two dodecameric adaptors (adaptors I and II), a hexameric nozzle, and a tail needle form a conserved tail body connected to a dodecameric portal occupying a unique vertex of the icosahedral head. However, five chain-like extended fibers (fiber I) and five tulip-like short fibers (fiber II) are anchored to a 15-fold symmetric fiber-tail adaptor, encircling the adaptor I, and six bamboo-like trimeric fibers (fiber III) are connected to the nozzle. Five fibers I, each composed of five dimers of the protein gp80 linked by an elongated rope protein, are attached to the five edges of the tail vertex of the icosahedral head. In this study, we identified a new structure of the podophage with three types of tail fibers, and such phages with different types of fibers may have a broad host range and/or infect host cells with considerably high efficiency, providing evolutionary advantages in harsh environments.
0: Portal protein 1: Putative tail fiber protein 2: Virion associated protein 3: Portal protein 4: Putative tail fiber protein 5: Virion associated protein 6: Portal protein 7: Putative tail fiber protein A: Virion-associated phage protein B: Virion-associated phage protein C: Virion-associated phage protein D: Virion-associated phage protein E: Virion-associated phage protein F: Virion-associated phage protein G: gp81 of phage GP4 H: gp81 of phage GP4 I: gp81 of phage GP4 J: gp81 of phage GP4 K: gp81 of phage GP4 L: gp81 of phage GP4 M: Putative tail fiber protein N: Putative tail fiber protein O: Putative tail fiber protein P: Putative tail fiber protein Q: Putative tail fiber protein R: Putative tail fiber protein S: gp81 of phage GP4 T: Virion associated protein U: Portal protein V: Putative tail fiber protein W: gp81 of phage GP4 X: Virion associated protein Y: Portal protein Z: Putative tail fiber protein a: gp81 of phage GP4 b: Virion associated protein c: Portal protein d: Putative tail fiber protein e: gp81 of phage GP4 f: Virion associated protein g: Portal protein h: Putative tail fiber protein i: gp81 of phage GP4 j: Virion associated protein k: Portal protein l: Putative tail fiber protein m: gp81 of phage GP4 n: Virion associated protein o: Portal protein p: Putative tail fiber protein q: Virion associated protein r: Portal protein s: Putative tail fiber protein t: Virion associated protein u: Portal protein v: Putative tail fiber protein w: Virion associated protein x: Portal protein y: Putative tail fiber protein z: Virion associated protein