Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • The alpha helices and beta sheets are the example of which level of protein organisation ?Option: 1 Primary structure<div class='qna-op

The alpha helices and beta sheets are the example of which level of protein organisation ?

Option: 1

Primary structure


Option: 2

Secondary structure


Option: 3

Tertiary Structure


Option: 4

None of these


Answers (1)

best_answer

 

 

Structure of Proteins - Secondary Structure

  • Once the primary structure of the protein is formed, it begins to twist into regular patterns that make its secondary structure. 
  • These twists are formed as a result of the regular pattern of H-bonds.
  • There are two types of secondary structures: α-helix and β-pleated sheets.

α-helix: 

  • It is a rod-like structure.
  • Inner portion contains the backbone of the polypeptide and outer portion contains the side chains.
  • The helical shape occurs because of the formation of H-bonds between the oxygen atom of the -CO group of one amino acid and the nitrogen atom of the -NH group of the fourth amino acid.
  • Thus, the H-bonds are formed every fourth amino acid.

β-pleated sheets:

  • In this structure, two linear polymers of amino acids run in opposite direction.
  • In this arrangement, the -NH and -C=O groups of an amino acid in one strand form H-bonds with -C=O and -NH groups of the opposing amino acids on the other strand.

Tip: The α-helix and β-pleated sheet structures are found in most globular and fibrous proteins and they play an important structural role.

 

-

 

 

 

There are two types of secondary structures of proteins:\alpha -helix and \beta -pleatedsheets.

Posted by

manish painkra

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

NEET 2025: Number of qualified candidates doubles in 3 years; state-wise breakup
anam-khan

Another NEET fraud? Dubai Consulate sees NRI certificates for medical admissions double in 3 years
anam-khan

40% in PCB must for OBC, SC, ST; percentage required for NEET 2025 in Class 12

Latest Question