ogen pept is rigid, take place about the N-Co and the Co-C bonds in a protein (Co is the a carbon atom). These bond angles define the conformation of the peptide chain. Consider the Ramachandran plot to answer both questions. Which observation most likely describes part of an observed a helix? = +60°; y +40°; many Gly residues = -60°; y = -47°; many Ala residues p=-57°; y = -47°; many Pro residues = -140°; y = +130°; many Val residues p = -59°; y = +150°; many Ser residues = Which observations would not likely occur in a ß sheet? +60°; many Gly residues -49°; many Ala residues p = +60°; y = = -57°; y = p = -120°; y = +120°; many Tyr residues = -51°; y = +153°; many Gly and Pro residues (degrees) 180 120 60 0 -60 -120 -180 -180 0 (degrees) 180

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The carbon-nitrogen peptide bond is rigid, but rotation can
take place about the N-C and the Co-C bonds in a protein
(Co is the a carbon atom). These bond angles define the
conformation of the peptide chain.
Consider the Ramachandran plot to answer both questions.
Which observation most likely describes part of an
observed a helix?
p = +60°; y
+40°; many Gly residues
= -60°; y = −47°; many Ala residues
=
= -57°; y = −47°; many Pro residues
= -140°; y = +130°; many Val residues
p = -59°; y = +150°; many Ser residues
Which observations would not likely occur in a ẞ sheet?
p = +60°; y = +60°; many Gly residues
p = −57°; y = −49°; many Ala residues
= -120°; y = +120°; many Tyr residues
= -51°; y = +153°; many Gly and Pro residues
p = −139°; y = +135°; many Val residues
(degrees)
180
120
60
0
-60
-120
-180
-180
0
(degrees)
180
Transcribed Image Text:The carbon-nitrogen peptide bond is rigid, but rotation can take place about the N-C and the Co-C bonds in a protein (Co is the a carbon atom). These bond angles define the conformation of the peptide chain. Consider the Ramachandran plot to answer both questions. Which observation most likely describes part of an observed a helix? p = +60°; y +40°; many Gly residues = -60°; y = −47°; many Ala residues = = -57°; y = −47°; many Pro residues = -140°; y = +130°; many Val residues p = -59°; y = +150°; many Ser residues Which observations would not likely occur in a ẞ sheet? p = +60°; y = +60°; many Gly residues p = −57°; y = −49°; many Ala residues = -120°; y = +120°; many Tyr residues = -51°; y = +153°; many Gly and Pro residues p = −139°; y = +135°; many Val residues (degrees) 180 120 60 0 -60 -120 -180 -180 0 (degrees) 180
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