In 1988, Richardson and Richardson observed that certain amino acid residues are statically favored as the amino-terminal caps for the alpha helices in 45 globular proteins. Which of the following statement stand correct with stability of helix?

A. The introduction of a negatively charged side chain at the N-cap, which can neutralize the partial dipole created by the unpaired amide protons, has been shown to increase stability

B. In particular, Gly is often observed at the both C-cap position and N-cap positions

C. In particular, Gly is often observed at the C-cap position only

D. In particular, Gly is often observed at the C-cap position, Asn at the N-cap position, Pro at the Ncap+1 and Asp and Glu at N2 and N3

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#Question id: 547

#Unit 1. Structure and Function of Biomolecules

The role of an enzyme in an enzyme-catalyzed reaction is to:

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#Question id: 548

#Unit 1. Structure and Function of Biomolecules

Which one of the following statements is true of enzyme catalysts?

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#Question id: 549

#Unit 1. Structure and Function of Biomolecules

Which one of the following statements is true of enzyme catalysts?

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#Question id: 550

#Unit 1. Structure and Function of Biomolecules

Which of the following statements is false?

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#Question id: 551

#Unit 1. Structure and Function of Biomolecules

Enzymes differ from other catalysts in that only enzymes:

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#Question id: 552

#Unit 1. Structure and Function of Biomolecules

Which of the following is true of the binding energy derived from enzyme-substrate interactions?