Structure and Properties of Peptides The major element of secondary structure in myoglobin and hemoglobin is the a-helix the P-strand All of these the reverse turn the a-helix the P-strand All of these the reverse turn ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides What is the effect of a decrease in pH on hemoglobin oxygen affinity? Increase in oxygen affinity Increase affinity in muscle cell otherwise decrease Decrease in oxygen affinity No effect on oxygen affinity Increase in oxygen affinity Increase affinity in muscle cell otherwise decrease Decrease in oxygen affinity No effect on oxygen affinity ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides The Ramachandran Plot illustrates the fact that the F & Y angles can assume only a single value in a protein the F & Y angles can assume any value in a peptide the peptide bond is planar the F & Y angles can assume approximately three different values the F & Y angles can assume only a single value in a protein the F & Y angles can assume any value in a peptide the peptide bond is planar the F & Y angles can assume approximately three different values ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides Peptides in the fully extended chain conformation also have a cis geometry in their peptide bonds do not occur in nature 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 have Y = F = 180° are equivalent to the (3-sheet structure ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides Hydrogen bonds in a-helices are not present at Phe residues more numerous than Vander Waals interactions analogous to the steps in a spiral staircase roughly parallel to the helix axis not present at Phe residues more numerous than Vander Waals interactions analogous to the steps in a spiral staircase roughly parallel to the helix axis ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides The resonance structures that can be drawn for the peptide bond indicate that the peptide bond is still not completely understood both (a) and (b) is stronger than an ordinary single bond has partial double bond character is still not completely understood both (a) and (b) is stronger than an ordinary single bond has partial double bond character ANSWER DOWNLOAD EXAMIANS APP
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