Question

Significance of secondary and tertiary structure of a protein

Answer 1

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The primary structure of proteins describes a chain of amino acids connected by covalent bonds to form a polypeptide chain. ... A protein's quaternary structure is formed when a protein contains two or more peptide chains (also called subunits) with primary, secondary and tertiary structure.

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Answer 2

Answer:

Tertiary structure:

• The long protein chain of the

polypeptide chain usually folds

upon itself like a hollow woollen

ball. This is termed as tertiary

structure. This structure gives a

3-dimensional view of protein.

• Tertiary structure is absolutely

necessary for the many

biological activities of proteins

for example, this structure

brings distant amino acid side

chains closer forming the active

site (the site to which a

substrate gets attached) of

proteins i.e., enzymes. e.g.,

Myoglobin (protein found in

muscle cell)