Pseudomonas phage Pa193 Neck (portal and head-to-tail proteins)
要素
gp19 Portal
gp28 Head-to-tail protein
キーワード
VIRAL PROTEIN / phage / bacteriophage / gene product (gp19) / STRUCTURAL PROTEIN / gene product 28 (gp28) / head-to-tail protein / portal protein
機能・相同性
Inorganic pyrophosphatase domain / Inorganic Pyrophosphatase / Protein of unknown function DUF4054 / Protein of unknown function (DUF4054) / Protein of unknown function DUF1073 / Phage portal protein / Phage protein / Uncharacterized 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.