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प्रश्न
What type of bonding helps in stabilising the ∝-helix structure of proteins?
उत्तर १
The H-bonds formed between the −NH group of each amino acid residue and the 
group of the adjacent turns of the ∝-helix help in stabilising the helix.
उत्तर २
The α-helix structure of proteins is stabilized by intramolecular H-bonding between C = O of one amino acid residue and the N – H of the fourth amino acid residue in the chain. This causes the polypeptide chain to coil up into a spiral structure called right handed α- helix structure.
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संबंधित प्रश्न
How are proteins classified on the basis of molecular shapes?
How is tripeptide formed?
Define the following as related to proteins
Peptide linkage
What are the common types of secondary structure of proteins?
Differentiate between the following :
Peptide linkage and Glycosidic linkage
The correct statement for protein haemoglobin.
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(i) van der Waals forces
(ii) disulphide linkage
(iii) electrostatic forces of attraction
(iv) hydrogen bonds
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(i) Guanine
(ii) Adenine
(iii) Thymine
(iv) Uracil
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\[\ce{\underset{(Glycine)}{H2N - CH2 - COOH}}\];
\[\begin{array}{cc}
\ce{H2N - CH2 - COOH}\\
|\phantom{......}\\
\ce{\underset{(Alanine)}{CH3}\phantom{...}}
\end{array}\]
Peptide linkage is:
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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:
Out of the following, which type of interaction is responsible for the stabilisation of the α-helix structure of proteins?
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Proteins are polymers of ______.
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