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Assay Method Information

Assay Name:  Enzyme Assay
Description:  Purified human glycoprotein IIb/IIIa (20 mM Tris-HCl, 0.1 M NaCl, 0.1% Triton X-100, 1 mM CaCl2, 0.05% NaN3, 50% Glycerol, pH 7.4) was purchased from Enzyme Research Laboratories Inc. (South Bend, Ind.). The GPIIb/IIIa receptor was diluted in phosphate-buffered saline (Dulbecco's Phosphate Buffered Saline (D-PBS (+)) with calcium and magnesium, GIBCOŽ, Invitrogen) with 0.01% bovine serum albumin (albumin from bovine serum-lyophilized powder, >96%, Sigma).The GPIIb/IIIa receptor was immobilized 48 hours at least (100 μL per well, 48 to maximum 96 hours) on a 96-well solid plate (Immuno Plate MaxiSorp, Nunc, Roskilde, Denmark) at 277 K to 280 K and at a concentration of 0.1 μg per well to 1 μg per well. As negative control one row of the plate (n=8) was incubated just with 2% bovine serum albumin (200 μL per well, albumin from bovine serum-lyophilized powder, >96%, Sigma, diluted in D-PBS (+)).After washing three times with the wash buffer (230 μL per well, Dulbecco's Phosphate Buffered Saline (D-PBS (−)) contains no calcium or magnesium, GIBCOŽ, Invitrogen) residual exposed plastic and unspecific binding sites were blocked by incubating the plate with a special blocking solution (200 μL per well, RotiŽ-Block, Carl Roth GmbH Co KG, Karlsruhe) containing 2% bovine serum albumin (Albumin from bovine serum-lyophilized powder, >96%, Sigma) 1 hour at room temperature.
Affinity data for this assay
 

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Last update November 1, 2007
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