1JKY

Crystal Structure of the Anthrax Lethal Factor (LF): Wild-type LF Complexed with the N-terminal Sequence of MAPKK2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.9 Å
  • R-Value Free: 0.316 
  • R-Value Work: 0.296 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Crystal structure of the anthrax lethal factor.

Pannifer, A.D.Wong, T.Y.Schwarzenbacher, R.Renatus, M.Petosa, C.Bienkowska, J.Lacy, D.B.Collier, R.J.Park, S.Leppla, S.H.Hanna, P.Liddington, R.C.

(2001) Nature 414: 229-233

  • DOI: 10.1038/n35101998
  • Primary Citation of Related Structures:  1J7N

  • PubMed Abstract: 
  • Lethal factor (LF) is a protein (relative molecular mass 90,000) that is critical in the pathogenesis of anthrax. It is a highly specific protease that cleaves members of the mitogen-activated protein kinase kinase (MAPKK) family near to their amino ...

    Lethal factor (LF) is a protein (relative molecular mass 90,000) that is critical in the pathogenesis of anthrax. It is a highly specific protease that cleaves members of the mitogen-activated protein kinase kinase (MAPKK) family near to their amino termini, leading to the inhibition of one or more signalling pathways. Here we describe the crystal structure of LF and its complex with the N terminus of MAPKK-2. LF comprises four domains: domain I binds the membrane-translocating component of anthrax toxin, the protective antigen (PA); domains II, III and IV together create a long deep groove that holds the 16-residue N-terminal tail of MAPKK-2 before cleavage. Domain II resembles the ADP-ribosylating toxin from Bacillus cereus, but the active site has been mutated and recruited to augment substrate recognition. Domain III is inserted into domain II, and seems to have arisen from a repeated duplication of a structural element of domain II. Domain IV is distantly related to the zinc metalloprotease family, and contains the catalytic centre; it also resembles domain I. The structure thus reveals a protein that has evolved through a process of gene duplication, mutation and fusion, into an enzyme with high and unusual specificity.


    Organizational Affiliation

    Biochemistry Department, University of Leicester, Leicester LE1 7RH, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Lethal Factor
A
776Bacillus anthracisGene Names: lef
EC: 3.4.24.83
Find proteins for P15917 (Bacillus anthracis)
Go to UniProtKB:  P15917
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
mitogen-activated protein kinase kinase 2
B
16Homo sapiensGene Names: MAP2K2 (MEK2, MKK2, PRKMK2)
EC: 2.7.12.2
Find proteins for P36507 (Homo sapiens)
Go to Gene View: MAP2K2
Go to UniProtKB:  P36507
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.9 Å
  • R-Value Free: 0.316 
  • R-Value Work: 0.296 
  • Space Group: I 41 3 2
Unit Cell:
Length (Å)Angle (°)
a = 330.700α = 90.00
b = 330.700β = 90.00
c = 330.700γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
SCALEPACKdata scaling
CCP4model building
CNSrefinement
DENZOdata reduction
CCP4phasing
CNSphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-11-07
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-02-08
    Type: Structure summary
  • Version 1.4: 2017-10-04
    Type: Refinement description