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Zinc Ion Coordination in Enzymatic Catalysis - Molecular Mechanism #3645169 (License: Personal Use)
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The image illustrates the coordination of a Zn²⁺ ion with the carbonyl oxygen of a phosphorylated organic compound, resulting in increased bond polarity (δ⁻ on O, δ⁺ on C). This electrostatic stabilization lowers the activation energy for nucleophilic addition, a common strategy in metalloenzyme catalysis such as alkaline phosphatase. The phosphate group remains negatively charged, reinforcing Zn²⁺’s role in orienting and activating the substrate.
Used in biochemistry and enzymology educational resources, research presentations, or textbook figures explaining metal-ion catalysis-especially in phosphatases, proteases, or carbonic anhydrases. Matches user intent for understanding catalytic mechanisms involving transition metals.
Related Cliparts: Discover how Zn²⁺ enhances carbonyl electrophilicity in enzyme active sites through polarization-key to hydrolytic reactions like phosphatase catalysis.
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