National Natural Science Foundation of China (NSFC)
12034006
中国
National Natural Science Foundation of China (NSFC)
32430020
中国
National Natural Science Foundation of China (NSFC)
32071209
中国
National Natural Science Foundation of China (NSFC)
32200994
中国
National Natural Science Foundation of China (NSFC)
32401014
中国
National Natural Science Foundation of China (NSFC)
32271329
中国
National Natural Science Foundation of China (NSFC)
32071262
中国
引用
ジャーナル: Structure / 年: 2025 タイトル: Asymmetric structure of podophage N4 from the Schitoviridae family reveals a type of tube-sheath short-tail architecture. 著者: Jing Zheng / Hao Pang / Hao Xiao / Junquan Zhou / Zhonghua Liu / Wenyuan Chen / Hongrong Liu / 要旨: The tails of the majority of reported podophages are typically composed of an adaptor, a nozzle, and a needle, and flanked by six or twelve fibers. However, the Schitoviridae family, as represented ...The tails of the majority of reported podophages are typically composed of an adaptor, a nozzle, and a needle, and flanked by six or twelve fibers. However, the Schitoviridae family, as represented by podophage N4, exhibits a different tail architecture that remains poorly understood. In this study, we employed cryoelectron microscopy (cryo-EM) to determine the atomic structures of mature and empty podophage N4 particles. The N4 tail, which is connected to the head by a portal and flanked by 12 fibers, comprises an adaptor, a 12-fold extended tail tube encircled by a 6-fold tail sheath, and a plug. The extended tail sheath is composed of two proteins, gp65 and gp64. Furthermore, we identified two distinct tail conformations in the mature podophage N4. Our structures provide insights into the mechanisms of ejection and early transcription of podophage N4, as well as for N4-like phages and CrAssphages.