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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

polar residues
negatively charged residues
hydrophobic residues
positively charged residues

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Structure and Properties of Peptides
An oil drop with a polar coat is a metaphor referring to the three dimensional structure of

fibrous proteins
silk protein
globular proteins
collagen

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

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

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Structure and Properties of Peptides
Disulfide bonds most often stabilize the native structure of

intracellular proteins
dimeric proteins
hydrophobic proteins
extracellular proteins

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Structure and Properties of Peptides
The nature of peptide bond can be best explained as

partial double bond
truly double bond
Hydrogen bond
Van der waals force

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Structure and Properties of Peptides
Peptides in the fully extended chain conformation

have Y = F = 180°
are equivalent to the (3-sheet structure
also have a cis geometry in their peptide bonds
do not occur in nature

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