Download MendeleyCryo-EM Reveals Structural Diversity in Prolate-headed Mycobacteriophage Mycofy1.
Li, X., Shao, Q., Li, L., Xie, L., Ruan, Z., Fang, Q.(2025) J Mol Biology 437: 169126-169126
- PubMed: 40187685
- DOI: https://doi.org/10.1016/j.jmb.2025.169126
- Primary Citation of Related Structures:
9LW6, 9LW7, 9LW8, 9LW9, 9LWA - PubMed Abstract:
Mycobacteriophages show promise in treating antibiotic-resistant mycobacterial infections. Here, we isolated Mycofy1, a mycobacteriophage, using M. smegmatis as a host. Cryo-EM analysis revealed that Mycofy1 possesses a prolate head and a long non-contractile tail. We determined structures of its head, head-to-tail interface, terminator, and tail tube to resolutions of ∼3.5 Å. Unexpectedly, we identified two distinct types of prolate head structures, exhibiting a 36-degree relative rotation in the top cap region. Additionally, the head-to-tail interface demonstrated flexibility. Our structures provide the first high-resolution cryo-EM data of a mycobacteriophage with a prolate head, as well as detailed structural information of the head-to-tail interface and head-proximal tail region in this phage group. These findings advance our understanding of assembly mechanisms in tailed bacteriophages.
Organizational Affiliation:
School of Public Health (Shenzhen), Shenzhen Campus of Sun Yat-sen University, No. 66, Gongchang Road, Guangming District, Shenzhen, Guangdong 518107, China; Shenzhen Key Laboratory of Pathogenic Microbes and Biosafety, Shenzhen Campus of Sun Yat-sen University, No. 66, Gongchang Road, Guangming District, Shenzhen, Guangdong 518107, China.
