FOOD CHEMISTRY
CARBOHYDRATES PROTEINS AND LIPIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In the stable form of a globular protein, what is generally oriented to the interior of the protein molecule?
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Hydrophilic amino acids
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Hydrophobic amino acids
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R groups of polypeptide
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Peptide backbone
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Explanation:
Detailed explanation-1: -At a simple level, a globular protein may be considered to consist of a hydrophobic core surrounded by a hydrophilic external surface which interacts with water. The tertiary fold of the polypeptide is such that those residues with apolar side chains are buried in the centre, while the polar residues remain exposed.
Detailed explanation-2: -Polypeptide chains fold into this shape based on the interactions between secondary structures and thermodynamic interactions with water. Non-polar or hydrophobic amino acid residues do not mix well with water and will cause the protein to fold in a way that hides them in the interior of the protein.
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