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Acta Crystallogr Sect F Struct Biol Cryst Commun. 2005 Aug 1;61(Pt 8):740-2. Epub 2005 Jul 8.

Crystallization and preliminary X-ray crystallographic analysis of adenosine 5'-monophosphate deaminase (AMPD) from Arabidopsis thaliana in complex with coformycin 5'-phosphate.

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Department of Biochemistry, University of Wisconsin-Madison, WI 53706-1544, USA.


Adenosine 5'-monophosphate deaminase (AMPD) is a eukaryotic enzyme that converts adenosine 5'-monophosphate (AMP) to inosine 5'-monophosphate (IMP) and ammonia. AMPD from Arabidopsis thaliana (AtAMPD) was cloned into the baculoviral transfer vector p2Bac and co-transfected along with a modified baculoviral genome into Spodoptera frugiperda (Sf9) cells. The resulting recombinant baculovirus were plaque-purified, amplified and used to overexpress recombinant AtAMPD. Crystals of purified AtAMPD have been obtained to which coformycin 5'-phosphate, a transition-state inhibitor, is bound. Crystals belong to space group P6(2)22, with unit-cell parameters a = b = 131.325, c = 208.254 A, alpha = beta = 90, gamma = 120 degrees. Diffraction data were collected to 3.34 A resolution from a crystal in complex with coformycin 5'-phosphate and to 4.05 A resolution from a crystal of a mercury derivative.

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