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The effect of an inhibitor on sucrase activity.
Member rating: No Rating | Words: | Submitted: Mon Oct 04 2004
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Nang The effect of inhibitor on sucrase activity Introduction Sucrase is an enzyme which catalyses the hydrolysis of sucrose into glucose and fructose. The products of the reaction are reducing sugars (glucose and fructose). Like many enzymes, sucrase is a globular protein and its structure is maintained by hydrogen bonds, disulphide bridges and the ionic bond. Sucrase has a specific site called active-site where substrate molecules (sucrose) bind to form enzyme-substrate complex. The shape of the active-site is so specific that only sucrose can fit in. This is called lock and key mechanism and suggests that one enzyme can only catalyse one reaction. However, enzyme slightly changes its shape when substrate binds to its active- site. This process is known as an induced fit. The presence of these molecules can be tested by using Benedict's solution. The reducing sugar means that it can reduce the copper (II) in Benedict's solution into copper (I)...
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