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: 18.86 kDa 
• Atom Count: 1557 
• Modelled Residue Count: 160 
• Deposited Residue Count: 167 
• Unique protein chains: 1

1JVW

TRYPANOSOMA CRUZI MACROPHAGE INFECTIVITY POTENTIATOR (TCMIP)

• PDB DOI: 10.2210/pdb1JVW/pdb

• Classification: ISOMERASE
• Organism(s): Trypanosoma cruzi
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2001-08-31 Released: 2002-06-05 
• Deposition Author(s): Pereira, P.J.B., Vega, M.C., Gonzalez-Rey, E., Fernandez-Carazo, R., Macedo-Ribeiro, S., Gomis-Rueth, F.X., Gonzalez, A., Coll, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.231 
• R-Value Work: 0.176 
• R-Value Observed: 0.179 

Literature

Trypanosoma cruzi macrophage infectivity potentiator has a rotamase core and a highly exposed alpha-helix.

Pereira, P.J., Vega, M.C., Gonzalez-Rey, E., Fernandez-Carazo, R., Macedo-Ribeiro, S., Gomis-Ruth, F.X., Gonzalez, A., Coll, M.

(2002) EMBO Rep 3: 88-94

• PubMed: 11751578 
• DOI: 10.1093/embo-reports/kvf009
• Primary Citation of Related Structures:  
  1JVW


• PubMed Abstract: 
  

The macrophage infectivity potentiator protein from Trypanosoma cruzi (TcMIP) is a major virulence factor secreted by the etiological agent of Chagas' disease. It is functionally involved in host cell invasion. We have determined the three-dimensional crystal structure of TcMIP at 1.7 A resolution. The monomeric protein displays a peptidyl-prolyl cis-trans isomerase (PPIase) core, encompassing the characteristic rotamase hydrophobic active site, thus explaining the strong inhibition of TcMIP by the immunosuppressant FK506 and related drugs. In TcMIP, the twisted beta-sheet of the core is extended by an extra beta-strand, preceded by a long, exposed N-terminal alpha-helix, which might be a target recognition element. An invasion assay shows that the MIP protein from Legionella pneumophila (LpMIP), which has an equivalent N-terminal alpha-helix, can substitute for TcMIP. An additional exposed alpha-helix, this one unique to TcMIP, is located in the C-terminus of the protein. The high-resolution structure reported here opens the possibility for the design of new inhibitory drugs that might be useful for the clinical treatment of American trypanosomiasis.

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Organizational Affiliation: 

Institut de Biología Molecular-CSIC, Jordi Girona 18-26, E-08034 Barcelona and 1Instituto de Parasitología y Biomedicina-CSIC, Ventanilla 11, E-18001 Granada, Spain.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
MACROPHAGE INFECTIVITY POTENTIATOR	A	167	Trypanosoma cruzi	Mutation(s): 0  Gene Names: MIP EC: 5.2.1.8
UniProt
Find proteins for Q09734 (Trypanosoma cruzi) Explore Q09734  Go to UniProtKB:  Q09734

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.231 
• R-Value Work: 0.176 
• R-Value Observed: 0.179 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 46.034	α = 90
b = 34.587	β = 91.57
c = 50.412	γ = 90

Software Package:

Software Name	Purpose
AMoRE	phasing
SHELXL-97	refinement
MOSFLM	data reduction
CCP4	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2001-08-31 
• Released Date: 2002-06-05 
Deposition Author(s): Pereira, P.J.B., Vega, M.C., Gonzalez-Rey, E., Fernandez-Carazo, R., Macedo-Ribeiro, S., Gomis-Rueth, F.X., Gonzalez, A., Coll, M.

Revision History  

• Version 1.0: 2002-06-05
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance