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Structure and Properties of Peptides

Structure and Properties of Peptides
What is the proportion of glycine residues in collagenous regions?

One-third
One-fourth
One-tenth
Half

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Structure and Properties of Peptides
Which of the following is an example of tertiary structure in a protein?

A multimeric protein
A P-pleated sheet
A globular domain
An a-helix

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Structure and Properties of Peptides
Heme is the binding pocket of myoglobin and hemoglobin and is composed of

hydrophobic residues
polar residues
negatively charged residues
positively charged residues

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Structure and Properties of Peptides
In β-pleated sheet structures neighbouring

neighboring chains are hydrogen bonded
chains lie in a flat plane
neighboring residues are hydrogen bonded
neighboring chains are connected by a-helices

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Structure and Properties of Peptides
The different orders of protein structure are determined by all of the following bond types except

phospho-diester bonds
hydrogen bonds
peptide bonds
disulfide bridges

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Structure and Properties of Peptides
The major element of secondary structure in myoglobin and hemoglobin is

the a-helix
All of these
the reverse turn
the P-strand

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