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Induced Fit Theory

According to ...

Question

According to induced fit theory of enzyme action

A

substrate induces conformational change in enzyme

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B

substrate changes its shape after binding

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C

conformational change takes place in substrate

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D

there is no conformational change in enzyme

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Solution

The correct option is A substrate induces conformational change in enzyme
The induced fit theory of enzyme action was given by Daniel Koshland in 1958. According to this theory whenever a substrate binds to an enzyme it induces conformational change to the enzyme which strengthen its binding.

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Similar questions

Q. Is allosteric inhibition only applicable in the lock and key mechanism?
Since the induced fit theory tells that the substrate can actually induce a change in the active site of the enzyme, hence even if the inibitor attaches itself to the enzyme, the substrate can attach to it (by changing the shape of the active site).

Q. The binding of the substrate induces the enzyme to alter its shape fitting more tightly around the substrate.

Q. Arrange the steps of catalytic action of an enzyme in order and choose the right option.

(i)

Enzyme releases products of reaction and the enzyme is free to bind to another substrate.

(i i)

Active site of enzyme is in close proximity of substrate and breaks the chemical bonds of substrate.

(i i i)

Binding of substrate induces enzyme to alter its shape fitting more tightly around substrate.

(i v)

Substrate binds to active site of enzyme fitting into active site.

Q. According to the induced fit hypothesis, which of the active site of enzymes brings about the catalytic changes of the substrate?

Q. When the digestive enzyme carboxypeptidase binds to the substrate, it causes a change in the chemical bonds of the substrate to form the product. This model of enzyme activity is known as

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Induced Fit Theory

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