The two important types of secondary structures of proteins are(a) mot

1.	The two important types of secondary structures of proteins are(a) motifs and domains(b) α - helix, β - pleated sheet(c) peptide bond, hydrogen bond(d) R group, amino group
Answer» Answer is : (b) α - helix, β - pleated sheet The two important types of secondary structures of proteins are α - helix and β - pleated sheet. β - sheets consist of β - strands connected laterally by atleast two or three backbone H - bonds, forming a generally twisted, pleated sheet. A β - strand is a stretch of polypeptide chain, 3 -10 amino acids long with backbone in an extended conformation. In α - helix, the chain is spirally coiled, generally in a right - handed manner. This structure is formed through H - bonding in single amino acid chain only.

The two important types of secondary structures of proteins are(a) motifs and domains(b) α - helix, β - pleated sheet(c) peptide bond, hydrogen bond(d) R group, amino group

Answer»

Answer is : (b) α - helix, β - pleated sheet

The two important types of secondary structures of proteins are α - helix and β - pleated sheet. β - sheets consist of β - strands connected laterally by atleast two or three backbone H - bonds, forming a generally twisted, pleated sheet. A β - strand is a stretch of polypeptide chain, 3 -10 amino acids long with backbone in an extended conformation.

In α - helix, the chain is spirally coiled, generally in a right - handed manner. This structure is formed through H - bonding in single amino acid chain only.

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