1FXW

CRYSTAL STRUCTURE OF THE RECOMBINANT ALPHA1/ALPHA2 CATALYTIC HETERODIMER OF BOVINE BRAIN PLATELET-ACTIVATING FACTOR ACETYLHYDROLASE IB.

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.212 

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Literature

Preparation and crystal structure of the recombinant alpha(1)/alpha(2) catalytic heterodimer of bovine brain platelet-activating factor acetylhydrolase Ib.

Sheffield, P.J., McMullen, T.W., Li, J., Ho, Y.S., Garrard, S.M., Derewenda, U., Derewenda, Z.S.

(2001) Protein Eng 14: 513-519

  • DOI: 10.1093/protein/14.7.513
  • Primary Citation of Related Structures:  
    1FXW

  • PubMed Abstract: 

    • The intracellular form of mammalian platelet activating factor acetylhydrolase found in brain (PAF-AH Ib) is thought to play a critical role in control in neuronal migration during cortex development. This oligomeric complex consists of a homodimer of th ...

    The intracellular form of mammalian platelet activating factor acetylhydrolase found in brain (PAF-AH Ib) is thought to play a critical role in control in neuronal migration during cortex development. This oligomeric complex consists of a homodimer of the 45 kDa (beta) LIS1 protein, the product of the causative gene for type I lissencephaly, and, depending on the developmental stage and species, one of three possible pairs of two homologous approximately 26 kDa alpha-subunits, which harbor all of the catalytic activity. The exact composition of this complex depends on the expression patterns of the alpha(1) and alpha(2) genes, exhibiting tissue specificity and developmental control. All three possible dimers (alpha(1)/alpha(1), alpha(1)/alpha(2) and alpha(2)/alpha(2)) were identified in tissues. The alpha(1)/alpha(2) heterodimer is thought to play an important role in fetal brain. The structure of the alpha(1)/alpha(1) homodimer was solved earlier in our laboratory at 1.7 A. We report here the preparation of recombinant alpha(1)/alpha(2) heterodimers using a specially constructed bi-cistronic expression vector. The approach may be useful in studies of other systems where pure heterodimers of recombinant proteins are required. The alpha(1)/alpha(2) dimer has been crystallized and its structure was solved at 2.1 A resolution by molecular replacement. These results set the stage for a detailed characterization of the PAF-AH Ib complex.

    Related Citations: 
    • Brain Acetylhydrolase that Inactivates Platelet-activating Factor is a G-protein-like Trimer
      Ho, Y.S., Swenson, L., Derewenda, U., Serre, L., Wei, Y., Dauter, Z., Hattori, M., Adachi, T., Aoki, J., Arai, H., Inoue, K., Derewenda, Z.S.
      (1997) Nature 385: 89
    Organizational Affiliation: 

    Department of Molecular Physiology and Biological Physics, University of Virginia Health Sciences Center, Charlottesville, VA 22906-0011, USA.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PLATELET-ACTIVATING FACTOR ACETYLHYDROLASE IB GAMMA SUBUNIT A232Bos taurusMutation(s): 0 
Gene Names: PAFAH1B3, PAFAHG
EC: 3.1.1.47
Find proteins for Q29460 (Bos taurus)
Explore Q29460 
Go to UniProtKB:  Q29460
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PLATELET-ACTIVATING FACTOR ACETYLHYDROLASE IB BETA SUBUNIT F229Bos taurusMutation(s): 0 
Gene Names: PAFAH1B2P68402, PAFAHB
EC: 3.1.1.47
Find proteins for P68401 (Bos taurus)
Explore P68401 
Go to UniProtKB:  P68401
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA
Download Ideal Coordinates CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.212 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.519α = 90
b = 80.848β = 90
c = 116.207γ = 90
Software Package:
Software NamePurpose
AMoREphasing
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2000-09-27 
  • Released Date: 2001-12-12 
    • Deposition Author(s): Derewenda, Z., Li, J.

Revision History 

  • Version 1.0: 2001-12-12
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance