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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
How are proteins classified on the basis of molecular shapes?
What is peptide linkage?
What are the common types of secondary structure of proteins?
What type of bonding helps in stabilising the α-helix structure of proteins?
Which of the following biomolecules is insoluble in water?
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
Which moieties of nucleosides are involved in the formation of phosphodiester linkages present in dinucleotides? What does the word diester in the name of linkage indicate? Which acid is involved in the formation of this linkage?
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:
What is the effect of denaturation on the structure of proteins?
Write a classification of proteins with an example.
