BIOMOLECULES AND ENZYMES

BIOLOGY

PROTEINS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In their primary structure proteins exist in which shape?
A
Alpha helicies
B
Beta pleated sheets
C
A folded structure
D
Roughly linear shape
Explanation: 

Detailed explanation-1: -The primary structure is comprised of a linear chain of amino acids. The secondary structure contains regions of amino acid chains that are stabilized by hydrogen bonds from the polypeptide backbone. These hydrogen bonds create alpha-helix and beta-pleated sheets of the secondary structure.

Detailed explanation-2: -The linear sequence of amino acids within a protein is called the primary structure of the protein.

Detailed explanation-3: -Primary Structure (1˚) The primary structure of a peptide or protein is the linear sequence of its amino acids (AAs). By convention, the primary structure of a protein is read and written from the amino-terminal (N) to the carboxyl-terminal (C) end. Each amino acid is connected to the next by a peptide bond.

Detailed explanation-4: -During translation, each protein is synthesized as a linear chain of amino acids or a random coil which does not have a stable 3D structure. The amino acids in the chain eventually interact with each other to form a well-defined, folded protein.

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