Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 21.15 kDa 
• Atom Count: 1489 
• Modelled Residue Count: 190 
• Deposited Residue Count: 190 
• Unique protein chains: 1

2MBT

NMR study of PaDsbA

• PDB DOI: 10.2210/pdb2MBT/pdb
• BMRB: 19417

• Classification: OXIDOREDUCTASE
• Organism(s): Pseudomonas aeruginosa PAO1
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2013-08-03 Released: 2014-11-12 
• Deposition Author(s): Rimmer, K., Mohanty, B., Scanlon, M.J.

---

Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 40 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

Fragment library screening identifies hits that bind to the non-catalytic surface of Pseudomonas aeruginosa DsbA1.

Mohanty, B., Rimmer, K., McMahon, R.M., Headey, S.J., Vazirani, M., Shouldice, S.R., Coincon, M., Tay, S., Morton, C.J., Simpson, J.S., Martin, J.L., Scanlon, M.J.

(2017) PLoS One 12: e0173436-e0173436

• PubMed: 28346540 
• DOI: 10.1371/journal.pone.0173436
• Primary Citation of Related Structures:  
  2MBT, 5DCH, 5TLQ


• PubMed Abstract: 
  

At a time when the antibiotic drug discovery pipeline has stalled, antibiotic resistance is accelerating with catastrophic implications for our ability to treat bacterial infections. Globally we face the prospect of a future when common infections can once again kill. Anti-virulence approaches that target the capacity of the bacterium to cause disease rather than the growth or survival of the bacterium itself offer a tantalizing prospect of novel antimicrobials. They may also reduce the propensity to induce resistance by removing the strong selection pressure imparted by bactericidal or bacteriostatic agents. In the human pathogen Pseudomonas aeruginosa, disulfide bond protein A (PaDsbA1) plays a central role in the oxidative folding of virulence factors and is therefore an attractive target for the development of new anti-virulence antimicrobials. Using a fragment-based approach we have identified small molecules that bind to PaDsbA1. The fragment hits show selective binding to PaDsbA1 over the DsbA protein from Escherichia coli, suggesting that developing species-specific narrow-spectrum inhibitors of DsbA enzymes may be feasible. Structures of a co-complex of PaDsbA1 with the highest affinity fragment identified in the screen reveal that the fragment binds on the non-catalytic surface of the protein at a domain interface. This biophysical and structural data represent a starting point in the development of higher affinity compounds, which will be assessed for their potential as selective PaDsbA1 inhibitors.

---

Organizational Affiliation: 

Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Thiol:disulfide interchange protein DsbA	A	190	Pseudomonas aeruginosa PAO1	Mutation(s): 0  Gene Names: dsbA, PA5489
UniProt
Find proteins for P0C2B2 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)) Explore P0C2B2  Go to UniProtKB:  P0C2B2

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 40 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 
• OLDERADO: 2MBT Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2013-08-03 
• Released Date: 2014-11-12 
Deposition Author(s): Rimmer, K., Mohanty, B., Scanlon, M.J.

Revision History  

• Version 1.0: 2014-11-12
  Type: Initial release
  
• Version 1.1: 2017-04-12
  Changes: Database references