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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: 2.1 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.218 

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This is version 1.2 of the entry. See complete history. 

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


  • 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 o ...

    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

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PLATELET-ACTIVATING FACTOR ACETYLHYDROLASE IB GAMMA SUBUNIT
A
232Bos taurusGene Names: PAFAH1B3 (PAFAHG)
EC: 3.1.1.47
Find proteins for Q29460 (Bos taurus)
Go to Gene View: PAFAH1B3
Go to UniProtKB:  Q29460
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PLATELET-ACTIVATING FACTOR ACETYLHYDROLASE IB BETA SUBUNIT
F
229Bos taurusGene Names: PAFAH1B2 (PAFAHB)
EC: 3.1.1.47
Find proteins for P68401 (Bos taurus)
Go to Gene View: PAFAH1B2
Go to UniProtKB:  P68401
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA
Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.218 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 44.519α = 90.00
b = 80.848β = 90.00
c = 116.207γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
SCALEPACKdata scaling
DENZOdata reduction
AMoREphasing

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
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance