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Structure and Properties of Peptides

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

negatively charged residues
hydrophobic residues
positively charged residues
polar residues

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

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

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Structure and Properties of Peptides
If the F and Y angles of each peptide unit in a protein are known, which of the following may also be determined?

Thermodynamic stability
Complete quaternary structure
Complete tertiary structure
Complete secondary structure

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Structure and Properties of Peptides
Which hemoglobin chain replaces the beta chain in embryonic hemoglobulin?

Epsilon
Alfa
Delta
Gamma

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

One-tenth
Half
One-third
One-fourth

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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 P-strand
the reverse turn

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