9CC7

Bacteriophage PhiTE extended connector complex

9CC7 の概要

• エントリーDOI: 10.2210/pdb9cc7/pdb
• 関連するPDBエントリー: 9CB9 9CBA 9CC7
• EMDBエントリー: 45419 45420 45435 45486 45487 45488 45491 45613
• 分子名称: PhiTE adaptor protein, PhiTE head completion protein, PhiTE tail terminator protein, ... (6 entities in total)
• 機能のキーワード: connector, neck, sheath, tube, phite, virus, phage, adaptor, tail terminator, head completion, portal, viral protein
• 由来する生物種: Pectobacterium phage phiTE; 詳細
• タンパク質・核酸の鎖数: 10
• 化学式量合計: 329330.66

構造登録者

Hodgkinson-Bean, J.,Ayala, R. (登録日: 2024-06-20, 公開日: 2025-04-16)

主引用文献

Hodgkinson-Bean, J.,Ayala, R.,Jayawardena, N.,Rutter, G.L.,Watson, B.N.J.,Mayo-Munoz, D.,Keal, J.,Fineran, P.C.,Wolf, M.,Bostina, M.
Global structural survey of the flagellotropic myophage phi TE infecting agricultural pathogen Pectobacterium atrosepticum.
Nat Commun, 16:3257-3257, 2025

PubMed Abstract: Bacteriophages offer a promising alternative to drug-based treatments due to their effectiveness and host specificity. This is particularly important in agriculture as a biocontrol agent of plant diseases. Phage engineering is facilitated by structural knowledge. However, structural information regarding bacteriophages infecting plant pathogens is limited. Here, we present the cryo-EM structure of bacteriophage φTE that infects plant pathogen Pectobacterium atrosepticum. The structure reveals a distinct neck topology compared with other myophages, where tail terminator proteins compensate for reduced connectivity between sheath subunits. A contact network between tail fibers, the sheath initiator, and baseplate wedge proteins provides insights into triggers that transduce conformational changes from the baseplate to the sheath to orchestrate contraction. We observe two distinct oligomeric states of the tape measure protein (TMP), which is six-fold in regions proximal to the N-terminus and throughout most of the tail, while three-fold at the C-terminus, indicating that the TMP may be proteolytically cleaved. Our results provide a structural atlas of the model bacteriophage φTE, enhancing future interpretation of phage host interactions in pectobacteria. We anticipate that our structure will inform rational design of biocontrol agents against plant pathogens that cause diseases such as soft rot and blackleg disease in potatoes.

PubMed: 40188083
DOI: 10.1038/s41467-025-58514-x

実験手法

ELECTRON MICROSCOPY (3.14 Å)