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What is meant by tertiary structure of p...

What is meant by tertiary structure of proteins ?

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(i) A polypeptide chain is folded upon itself to form a three- dimensional globular structure .
(ii) It is stabilized by four types of bonds : ionic bonds , H-bonds , hydrophobic bonds and disulpide bonds between different loops of same polypeptide chain .
(iii) Examples : All the enzymes , myoglobin of muscles , globulins of plasma , etc.
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