Macrophage migration inhibitory factor from Ancylostoma ceylanicum

Experimental Data Snapshot

  • Resolution: 1.60 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.195 

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Structural and functional characterization of a secreted hookworm Macrophage Migration Inhibitory Factor (MIF) that interacts with the human MIF receptor CD74.

Cho, Y.Jones, B.F.Vermeire, J.J.Leng, L.DiFedele, L.Harrison, L.M.Xiong, H.Kwong, Y.K.Chen, Y.Bucala, R.Lolis, E.Cappello, M.

(2007) J Biol Chem 282: 23447-23456

  • DOI: https://doi.org/10.1074/jbc.M702950200
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Hookworms, parasitic nematodes that infect nearly one billion people worldwide, are a major cause of anemia and malnutrition. We hypothesize that hookworms actively manipulate the host immune response through the production of specific molecules designed to facilitate infection by larval stages and adult worm survival within the intestine. A full-length cDNA encoding a secreted orthologue of the human cytokine, Macrophage Migration Inhibitory Factor (MIF) has been cloned from the hookworm Ancylostoma ceylanicum. Elucidation of the three-dimensional crystal structure of recombinant AceMIF (rAceMIF) revealed an overall structural homology with significant differences in the tautomerase sites of the human and hookworm proteins. The relative bioactivities of human and hookworm MIF proteins were compared using in vitro assays of tautomerase activity, macrophage migration, and binding to MIF receptor CD74. The activity of rAceMIF was not inhibited by the ligand ISO-1, which was previously determined to be an inhibitor of the catalytic site of human MIF. These data define unique immunological, structural, and functional characteristics of AceMIF, thereby establishing the potential for selectively inhibiting the hookworm cytokine as a means of reducing parasite survival and disease pathogenesis.

  • Organizational Affiliation

    Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut 06520, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D
119Ancylostoma ceylanicumMutation(s): 0 
Find proteins for A4GRE3 (Ancylostoma ceylanicum)
Explore A4GRE3 
Go to UniProtKB:  A4GRE3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA4GRE3
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.60 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.195 
  • Space Group: P 63 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 115.34α = 90
b = 115.34β = 90
c = 199.26γ = 120
Software Package:
Software NamePurpose
ADSCdata collection
HKL-2000data reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-06-12
    Type: Initial release
  • Version 1.1: 2008-01-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2024-02-21
    Changes: Data collection, Database references, Derived calculations