The aconitase-catalyzed addition of water to cis-aconitate in the citric acid cycle occurs with the following stereochemistry. Does the addition of the OH group occur on the Re or the Si face of the substrate? What about the addition of the H? Does the reaction have syn or antistereochemistry?

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н со Но "02c. "O2C. co2 3. Aconitase H OH он (2R,3S)-Isocitrate cis-Aconitate 3.