Enzyme Kinematics Question

[SyrianHero]

My professor said that low Km means low Vmax, and I'm confused about that. Wouldn't a low Km mean higher affinity of the enzyme for the substrate and threfore the Vmax should be higher?

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[bee17]

You may have misunderstood your professor. Changing Km does not necessarily mean changing Vmax. For example, a competitive inhibitor increases Km without changing Vmax.