Pseudomonas phage Pa193 5-fold vertex (capsid, decorating, and scaffolding proteins)
要素
gp24 Scaffolding protein
gp25 Decorating protein
gp26 Major capsid
キーワード
VIRAL PROTEIN / phage / bacteriophage / gene product 24 (gp24) / STRUCTURAL PROTEIN / gene product 25 (gp25) / scaffolding protein / decorating protein / major capsid protein / gene product 26 (gp26)
機能・相同性
Uncharacterised conserved protein UCP029215 / Uncharacterized protein conserved in bacteria (DUF2213) / : / Structural cement protein (E217 gp24/Pam3 gp6) / Virion protein / Capsid and scaffold protein / Capsid and scaffold protein
National Institutes of Health/National Cancer Institute (NIH/NCI)
GM140733
米国
引用
ジャーナル: Commun Biol / 年: 2024 タイトル: Cryo-EM analysis of Pseudomonas phage Pa193 structural components. 著者: Stephano M Iglesias / Chun-Feng David Hou / Johnny Reid / Evan Schauer / Renae Geier / Angela Soriaga / Lucy Sim / Lucy Gao / Julian Whitelegge / Pierre Kyme / Deborah Birx / Sebastien Lemire / Gino Cingolani / 要旨: The World Health Organization has designated Pseudomonas aeruginosa as a critical pathogen for the development of new antimicrobials. Bacterial viruses, or bacteriophages, have been used in various ...The World Health Organization has designated Pseudomonas aeruginosa as a critical pathogen for the development of new antimicrobials. Bacterial viruses, or bacteriophages, have been used in various clinical settings, commonly called phage therapy, to address this growing public health crisis. Here, we describe a high-resolution structural atlas of a therapeutic, contractile-tailed Pseudomonas phage, Pa193. We used bioinformatics, proteomics, and cryogenic electron microscopy single particle analysis to identify, annotate, and build atomic models for 21 distinct structural polypeptide chains forming the icosahedral capsid, neck, contractile tail, and baseplate. We identified a putative scaffolding protein stabilizing the interior of the capsid 5-fold vertex. We also visualized a large portion of Pa193 ~ 500 Å long tail fibers and resolved the interface between the baseplate and tail fibers. The work presented here provides a framework to support a better understanding of phages as biomedicines for phage therapy and inform engineering opportunities.
A: gp26 Major capsid B: gp26 Major capsid C: gp26 Major capsid D: gp26 Major capsid E: gp26 Major capsid K: gp25 Decorating protein L: gp25 Decorating protein M: gp25 Decorating protein N: gp26 Major capsid O: gp26 Major capsid P: gp26 Major capsid Q: gp26 Major capsid R: gp26 Major capsid S: gp26 Major capsid G: gp24 Scaffolding protein F: gp24 Scaffolding protein H: gp24 Scaffolding protein I: gp24 Scaffolding protein J: gp24 Scaffolding protein