ISDA

Deposition Date 2023-08-17

Release Date 2024-03-13

Last Version Date 2024-11-13

Entry Detail

PDB ID:

8TUW

Keywords:

MEMBRANE PROTEIN

Title:

Type IV pilus from Pseudomonas PAO1 strain with PP7 Maturation protein

Biological Source:

Source Organism:

Pseudomonas aeruginosa PAO1 (Taxon ID: 208964)
Pseudomonas phage PP7 (Taxon ID: 12023)

Host Organism:

Pseudomonas aeruginosa PAO1

Method Details:

Experimental Method:

ELECTRON MICROSCOPY

Resolution:

7.90 Å

Aggregation State:

FILAMENT

Reconstruction Method:

SINGLE PARTICLE

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Maturation protein A
Chain IDs:A (auth: M1)
Chain Length:448
Number of Molecules:1
Biological Source:Pseudomonas phage PP7

UniProt ID:Q38061 Pfam ID:PF03863

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Type IV major pilin protein PilA
Gene (Uniprot):pilA
Chain IDs:B (auth: a2), C (auth: b2), D (auth: c2), E (auth: d2), F (auth: e2), G (auth: f2), H (auth: g2), I (auth: h2), J (auth: i2), K (auth: j2), L (auth: k2), M (auth: l2), N (auth: m2), O (auth: n2), P (auth: o2), Q (auth: p2)
Chain Length:143
Number of Molecules:16
Biological Source:Pseudomonas aeruginosa PAO1

UniProt ID:P04739 Pfam ID:PF07963, PF00114

Ligand Molecules

Primary Citation

Removal of Pseudomonas type IV pili by a small RNA virus.

Thongchol, J, Yu, Z, Harb, L, Lin, Y, Koch, M, Theodore, M, Narsaria, U, Shaevitz, J, Gitai, Z, Wu, Y, Zhang, J, Zeng, L.Show

Science 384 eadl0635 eadl0635 (2024)

PMID: 38574145 DOI: 10.1126/science.adl0635

Abstact

The retractile type IV pilus (T4P) is important for virulence of the opportunistic human pathogen Pseudomonas aeruginosa. The single-stranded RNA (ssRNA) phage PP7 binds to T4P and is brought to the cell surface through pilus retraction. Using fluorescence microscopy, we discovered that PP7 detaches T4P, which impairs cell motility and restricts the pathogen's virulence. Using cryo-electron microscopy, mutagenesis, optical trapping, and Langevin dynamics simulation, we resolved the structure of PP7, T4P, and the PP7/T4P complex and showed that T4P detachment is driven by the affinity between the phage maturation protein and its bound pilin, plus the pilus retraction force and speed, and pilus bending. Pilus detachment may be widespread among other ssRNA phages and their retractile pilus systems and offers new prospects for antibacterial prophylaxis and therapeutics.

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Primary Citation of related structures