FOOD CHEMISTRY
CARBOHYDRATES PROTEINS AND LIPIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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primary structure of protein.
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secondary structure of protein.
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tertiary structure of protein.
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quaternary structure of protein.
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Detailed explanation-1: -The -helix is one of the most common secondary structure motifs found in proteins and polypeptides and comprises a single strand of the polypeptide chain in a helical form with a right handed twist and is stabilized mainly by hydrogen bonds between C=Oi and N-Hi+4 groups within the same chain.
Detailed explanation-2: -The most common types of secondary structures are the helix and the pleated sheet. Both structures are held in shape by hydrogen bonds, which form between the carbonyl O of one amino acid and the amino H of another.
Detailed explanation-3: -The -helix is a common element of protein secondary structure, formed when amino acids “wind up” to form a right-handed helix where the side-chains point out from the central coil (Fig. 3.1A, B).
Detailed explanation-4: -The alpha helix (-helix) is a common motif in the secondary structure of proteins and is a right hand-helix conformation in which every backbone N−H group hydrogen bonds to the backbone C=O. group of the amino acid located four residues earlier along the protein sequence.