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Question
First scientist to find out protein nature of enzyme was
First scientist to find out protein nature of enzyme was
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Solution
The correct option is D Sumner
American chemist James B. Sumner discovered the protein nature of enzymes and developed a general crystallization method for enzymes. The enzyme he worked with was urease, which he isolated from jack beans. He accomplished this by mixing purified urease with acetone and then chilling it; the chilled solution produced crystallized urease. He was also able to show by chemical tests that his pure urease was a protein. This was the first experimental proof that an enzyme is a protein. So, the correct answer is 'Sumner'.
American chemist James B. Sumner discovered the protein nature of enzymes and developed a general crystallization method for enzymes. The enzyme he worked with was urease, which he isolated from jack beans. He accomplished this by mixing purified urease with acetone and then chilling it; the chilled solution produced crystallized urease. He was also able to show by chemical tests that his pure urease was a protein. This was the first experimental proof that an enzyme is a protein.
So, the correct answer is 'Sumner'.
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