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प्रश्न
An α-helix is a structural feature of ______.
पर्याय
Sucrose
Polypeptides
Nucleotides
Starch
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उत्तर
An α-helix is a structural feature of polypeptides.
Explanation:
An α-helix is a structural feature of polypeptides. In this structure, –NH– group of amino in one turn is twisted and stablised by hydrogen bond with the >C–O groups of amino acids. It is the secondary structure of protein.
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संबंधित प्रश्न
What type of bonding helps in stabilising the α-helix structure of proteins?
Proteins are found to have two different types of secondary structures viz. α-helix and β-pleated sheet structure. α-helix structure of protein is stabilised by:
Dinucleotide is obtained by joining two nucleotides together by phosphodiester linkage. Between which carbon atoms of pentose sugars of nucleotides are these linkages present?
Proteins can be classified into two types on the basis of their molecular shape i.e., fibrous proteins and globular proteins. Examples of globular proteins are:
(i) Insulin
(ii) Keratin
(iii) Albumin
(iv) Myosin
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
Peptide linkage is:
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:
Proteins are polymers of ______.
What is the effect of denaturation on the structure of proteins?
Write a classification of proteins with an example.
