reconstitution of lyophilized enzyme (soybean 15-lipoxygenase-1) - (Oct/06/2009 )

reconstitution of lyophilized enzyme (soybean 15-lipoxygenase-1, Sigma L7395), how to?
ive tried using sodium borate buffer (.2M pH 9) but it doesnt fully dissolve in it. any suggestions?

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