Pseudomonas phage Pa193 baseplate complex and tail fiber
Map data
Sample
Virus: Pseudomonas virus Pa193
Protein or peptide: x 11 types
Keywords
phage / bacteriophage / baseplate complex / STRUCTURAL PROTEIN / VIRAL PROTEIN / tail fiber
Function / homology
Function and homology information
peptidoglycan lytic transglycosylase activity / peptidoglycan metabolic process / membrane Similarity search - Function
: / : / Baseplate hub gp41 / Baseplate component gp38 / Protein of unknown function DUF2612 / : / Protein of unknown function (DUF2612) / Tail fiber protein gp32 / Phage protein Gp138 N-terminal domain / Phage protein Gp138 N-terminal domain ...: / : / Baseplate hub gp41 / Baseplate component gp38 / Protein of unknown function DUF2612 / : / Protein of unknown function (DUF2612) / Tail fiber protein gp32 / Phage protein Gp138 N-terminal domain / Phage protein Gp138 N-terminal domain / Baseplate protein J-like / Baseplate J-like protein / Vgr protein, OB-fold domain superfamily / Prokaryotic transglycosylase, active site / Prokaryotic transglycosylases signature. / Transglycosylase SLT domain 1 / Transglycosylase SLT domain / Lysozyme-like domain superfamily Similarity search - Domain/homology
Phage protein / Tail fiber protein / Tail fiber protein / Phage protein / Baseplate protein J-like domain-containing protein / Phage protein / Internal (Core) protein / Tail fiber protein / Phage protein / Baseplate protein Similarity search - Component
Biological species
Pseudomonas virus Pa193
Method
single particle reconstruction / cryo EM / Resolution: 3.3 Å
National Institutes of Health/National Cancer Institute (NIH/NCI)
GM140733
United States
Citation
Journal: Commun Biol / Year: 2024 Title: Cryo-EM analysis of Pseudomonas phage Pa193 structural components. Authors: 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 / Abstract: 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.
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