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प्रश्न
In fibrous proteins, polypeptide chains are held together by:
(i) van der Waals forces
(ii) disulphide linkage
(iii) electrostatic forces of attraction
(iv) hydrogen bonds
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उत्तर
(ii) disulphide linkage
(iv) hydrogen bonds
Explanation:
In fibrous proteins, polypeptide chains are held together by disulphide linkage and hydrogen bonds.
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संबंधित प्रश्न
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Discuss the optical activity of lactic acid.
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Peptide linkage and Glycosidic linkage
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Structures of glycine and alanine are given below. Show the peptide linkage in glycylalanine.
\[\ce{\underset{(Glycine)}{H2N - CH2 - COOH}}\];
\[\begin{array}{cc}
\ce{H2N - CH2 - COOH}\\
|\phantom{......}\\
\ce{\underset{(Alanine)}{CH3}\phantom{...}}
\end{array}\]
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The main structural feature of proteins is
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Given below are two statements labelled as Assertion (A) and Reason (R).
Assertion (A): Proteins are found to have two different types of secondary structures viz alpha-helix and beta-pleated sheet structure.
Reason (R): The secondary structure of proteins is stabilized by hydrogen bonding.
Select the most appropriate answer from the options given below:
An α-helix is a structural feature of ______.
β-pleated sheet structure in proteins refers to ______.
What is the effect of denaturation on the structure of proteins?
