3TU8

Crystal Structure of the Burkholderia Lethal Factor 1 (BLF1)

• PDB DOI: https://doi.org/10.2210/pdb3TU8/pdb

• Classification: UNKNOWN FUNCTION
• Organism(s): Burkholderia pseudomallei
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2011-09-16 Released: 2011-11-30 
• Deposition Author(s): Cruz, A., Hautbergue, G.M., Artymiuk, P.J., Baker, P.J., Chang, C.T., Mahadi, N.M., Mobbs, G.W., Mohamed, R., Nathan, S., Partridge, L.J., Raih, M.F., Ruzheinikov, S.N., Sedelnikova, S.E., Wilson, S.A., Rice, D.W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.04 Å
• R-Value Free: 0.160 
• R-Value Work: 0.129 
• R-Value Observed: 0.129 

Literature

A Burkholderia pseudomallei toxin inhibits helicase activity of translation factor eIF4A.

Cruz-Migoni, A., Hautbergue, G.M., Artymiuk, P.J., Baker, P.J., Bokori-Brown, M., Chang, C.T., Dickman, M.J., Essex-Lopresti, A., Harding, S.V., Mahadi, N.M., Marshall, L.E., Mobbs, G.W., Mohamed, R., Nathan, S., Ngugi, S.A., Ong, C., Ooi, W.F., Partridge, L.J., Phillips, H.L., Raih, M.F., Ruzheinikov, S., Sarkar-Tyson, M., Sedelnikova, S.E., Smither, S.J., Tan, P., Titball, R.W., Wilson, S.A., Rice, D.W.

(2011) Science 334: 821-824

• PubMed: 22076380 
• DOI: https://doi.org/10.1126/science.1211915
• Primary Citation of Related Structures:  
  3TU8, 3TUA


• PubMed Abstract: 
  

  The structure of BPSL1549, a protein of unknown function from Burkholderia pseudomallei, reveals a similarity to Escherichia coli cytotoxic necrotizing factor 1. We found that BPSL1549 acted as a potent cytotoxin against eukaryotic cells and was lethal when administered to mice. Expression levels of bpsl1549 correlate with conditions expected to promote or suppress pathogenicity. BPSL1549 promotes deamidation of glutamine-339 of the translation initiation factor eIF4A, abolishing its helicase activity and inhibiting translation. We propose to name BPSL1549 Burkholderia lethal factor 1.

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Organizational Affiliation: 

Department of Molecular Biology and Biotechnology, Krebs Institute, University of Sheffield, Sheffield S10 2TN, UK.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 23.32 kDa 
• Atom Count: 2,131 
• Modelled Residue Count: 210 
• Deposited Residue Count: 210 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Burkholderia Lethal Factor 1 (BLF1)	A	210	Burkholderia pseudomallei	Mutation(s): 0  Gene Names: BPSL1549
UniProt
Find proteins for Q63UP7 (Burkholderia pseudomallei (strain K96243)) Explore Q63UP7  Go to UniProtKB:  Q63UP7

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BR	B [auth A]	BROMIDE ION Br CPELXLSAUQHCOX-UHFFFAOYSA-M

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
CSO	A	L-PEPTIDE LINKING	C3 H7 N O3 S		CYS

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.04 Å
• R-Value Free: 0.160 
• R-Value Work: 0.129 
• R-Value Observed: 0.129 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 37.034	α = 90
b = 45.434	β = 90
c = 111.405	γ = 90

Software Package:

Software Name	Purpose
ADSC	data collection
SHELXS	phasing
SHELXL-97	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-11-30 
Deposition Author(s): Cruz, A., Hautbergue, G.M., Artymiuk, P.J., Baker, P.J., Chang, C.T., Mahadi, N.M., Mobbs, G.W., Mohamed, R., Nathan, S., Partridge, L.J., Raih, M.F., Ruzheinikov, S.N., Sedelnikova, S.E., Wilson, S.A., Rice, D.W.

Revision History  

• Version 1.0: 2011-11-30
  Type: Initial release
  
• Version 1.1: 2018-01-31
  Changes: Database references
• Version 1.2: 2024-10-16
  Changes: Data collection, Database references, Derived calculations, Structure summary