8UZ4

Crystal Structure of macrophage migration inhibitory factor (MIF) from Trichomonas vaginalis (Apo, P41212 form)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.245 
  • R-Value Observed: 0.246 

Starting Model: experimental
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This is version 1.1 of the entry. See complete history


Literature

Structures of Trichomonas vaginalis macrophage migratory inhibitory factor.

Srivastava, A.Nair, A.Dawson, O.C.O.Gao, R.Liu, L.Craig, J.K.Battaile, K.P.Harmon, E.K.Barrett, L.K.Van Voorhis, W.C.Subramanian, S.Myler, P.J.Lovell, S.Asojo, O.A.Darwiche, R.

(2024) Acta Crystallogr F Struct Biol Commun 80: 341-347

  • DOI: https://doi.org/10.1107/S2053230X24011105
  • Primary Citation of Related Structures:  
    8UR2, 8UR4, 8UZ4

  • PubMed Abstract: 

    The unicellular parasitic protozoan Trichomonas vaginalis causes trichomoniasis, the most prevalent nonviral sexually transmitted disease globally. T. vaginalis evades host immune responses by producing homologs of host proteins, including cytokines such as macrophage migration inhibitory factor. T. vaginalis macrophage migration inhibitory factor (TvMIF) helps to facilitate the survival of T. vaginalis during nutritional stress conditions, increases prostate cell proliferation and invasiveness, and induces inflammation-related cellular pathways, thus mimicking the ability of human MIF to increase inflammation and cell proliferation. The production, crystallization and three structures of N-terminally hexahistidine-tagged TvMIF reveal a prototypical MIF trimer with a topology similar to that of human homologs (hMIF-1 and hMIF-2). The N-terminal tag obscures the expected pyruvate-binding site. The similarity of TvMIF to its human homologs can be exploited for structure-based drug discovery.


  • Organizational Affiliation

    California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
MACROPHAGE MIGRATION INHIBITORY FACTOR
A, B, C
136Trichomonas vaginalis G3Mutation(s): 0 
Gene Names: TVAG_219770
EC: 5.3.3.12 (UniProt), 5.3.2.1 (UniProt)
UniProt
Find proteins for A2DXT4 (Trichomonas vaginalis (strain ATCC PRA-98 / G3))
Explore A2DXT4 
Go to UniProtKB:  A2DXT4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA2DXT4
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

Unit Cell:
Length ( Å )Angle ( ˚ )
a = 80.715α = 90
b = 80.715β = 90
c = 121.152γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
Aimlessdata scaling
XDSdata reduction
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United States75N93022C00036
National Institutes of Health/Office of the DirectorUnited StatesS10OD030394

Revision History  (Full details and data files)

  • Version 1.0: 2023-12-06
    Type: Initial release
  • Version 1.1: 2024-12-11
    Changes: Database references, Structure summary