3HA4

Crystal structure of the type one membrane protein MIX1 from Leishmania


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.212 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structure of the Leishmania major MIX protein: A scaffold protein that mediates protein-protein interactions.

Gorman, M.A.Uboldi, A.D.Walsh, P.J.Tan, K.S.Hansen, G.Huyton, T.Ji, H.Curtis, J.Kedzierski, L.Papenfuss, A.T.Dogovski, C.Perugini, M.A.Simpson, R.J.Handman, E.Parker, M.W.

(2011) Protein Sci. 20: 1060-1068

  • DOI: 10.1002/pro.631

  • PubMed Abstract: 
  • Infection by Leishmania and Trypanosoma causes severe disease and can be fatal. The reduced effectiveness of current treatments is largely due to drug resistance, hence the urgent need to develop new drugs, preferably against novel targets. We have r ...

    Infection by Leishmania and Trypanosoma causes severe disease and can be fatal. The reduced effectiveness of current treatments is largely due to drug resistance, hence the urgent need to develop new drugs, preferably against novel targets. We have recently identified a mitochondrial membrane-anchored protein, designated MIX, which occurs exclusively in these parasites and is essential for virulence. We have determined the crystal structure of Leishmania major MIX to a resolution of 2.4 Å. MIX forms an all α-helical fold comprising seven α-helices that fold into a single domain. The distribution of helices is similar to a number of scaffold proteins, namely HEAT repeats, 14-3-3, and tetratricopeptide repeat proteins, suggesting that MIX mediates protein-protein interactions. Accordingly, using copurification and mass spectroscopy we were able to identify several proteins that may interact with MIX in vivo. Being parasite specific, MIX is a promising new drug target and, thus, the structure and potential interacting partners provide a basis for structure-guided drug discovery.


    Organizational Affiliation

    Biota Structural Biology Laboratory, St. Vincent's Institute of Medical Research, Victoria 3065, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MIX1
A, B, C, D, E, F, G, H
154Leishmania majorMutation(s): 0 
Find proteins for Q4QI49 (Leishmania major)
Go to UniProtKB:  Q4QI49
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CO3
Query on CO3

Download SDF File 
Download CCD File 
A
CARBONATE ION
C O3
BVKZGUZCCUSVTD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.212 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 92.524α = 90.00
b = 100.389β = 90.00
c = 140.651γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
SHARPphasing
HKL-2000data reduction
Blu-Icedata collection
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-05-05
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance