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प्रश्न
β-pleated sheet structure in proteins refers to ______.
विकल्प
primary structure
secondary structure
tertiary structure
quaternary structure
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उत्तर
β-pleated sheet structure in proteins refers to secondary structure.
Explanation:
β-pleated sheet is a secondary protein structure formed when two or more segments of a polypeptide chain line up next to each other, generating a sheet-like structure held together by a hydrogen bond.
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संबंधित प्रश्न
Differentiate between the following:
Fibrous proteins and Globular 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?
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
Which of the following are purine bases?
(i) Guanine
(ii) Adenine
(iii) Thymine
(iv) Uracil
Each polypeptide in a protein has amino acids linked with each other in a specific sequence. This sequence of amino acids is said to be ______.
Presence of disulphide link gives rise to which structure of protein?
Out of the following, which type of interaction is responsible for the stabilisation of the α-helix structure of proteins?
Assertion (A): Proteins are polymers of α-amino acids connected by a peptide bond.
Reason (R): A tetrapeptide contains 4 amino acids linked by 4 peptide bonds.
Write a classification of proteins with an example.
