BIOMOLECULES AND ENZYMES

BIOLOGY

STRUCTURE OF PROTEINS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The main bonding that holds together the secondary structure of a protein is
A
covalent bonding
B
ionic bonding
C
hydrogen bonding
D
polar bonding
Explanation: 

Detailed explanation-1: -The secondary structure arises from the hydrogen bonds formed between atoms of the polypeptide backbone. The hydrogen bonds form between the partially negative oxygen atom and the partially positive nitrogen atom.

Detailed explanation-2: -Hydrogen bonds between polar amine and carboxyl groups alleviate the desolvation penalty of those groups as they become buried in protein’s native structure. This, in turn, gives rise to the familiar protein secondary structures, such as alpha-helices and beta-sheets.

Detailed explanation-3: -The secondary structure of proteins Within the long protein chains there are regions in which the chains are organised into regular structures known as alpha-helices (alpha-helixes) and beta-pleated sheets. These are the secondary structures in proteins. These secondary structures are held together by hydrogen bonds.

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