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The carbon-nitrogen peptide bond is rigid, but rotation can take place about the N-Ca and the Ca-C bonds in a protein (Ca is the a carbon atom). These bond angles define the conformation of the peptide chain. Consider the Ramachandran plot to answer both questions. Which dihedral angles and residues would not likely occur in a ß sheet? 180 120 60 -60 -120 -180 -180 180 o (degrees) O=-51°; Q=+153°; many Gly and Pro residues OA. O B. D=+60°; Y=+60°; many Gly residues OC. ®=-57"; y-49°; many Ala residues OD. D=-139°; =+135°; many Val residues O=-120°; y-+120°; many Tyr residues (səəBəp)

The carbon-nitrogen peptide bond is rigid, but rotation can take place about the N-Ca and the Ca-C bonds in a protein (Ca is the a carbon atom). These bond angles define the conformation of the peptide chain. Consider the Ramachandran plot to answer both questions. Which dihedral angles and residues would not likely occur in a ß sheet? 180 120 60 -60 -120 -180 -180 180 o (degrees) O=-51°; Q=+153°; many Gly and Pro residues OA. O B. D=+60°; Y=+60°; many Gly residues OC. ®=-57"; y-49°; many Ala residues OD. D=-139°; =+135°; many Val residues O=-120°; y-+120°; many Tyr residues (səəBəp)

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
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The carbon-nitrogen peptide bond is rigid, but rotation can take place about the N-Ca and the Ca-C bonds in a protein (Ca is the a carbon atom). These bond angles define the conformation of the peptide chain. Consider the Ramachandran plot to answer both questions. Which dihedral angles and residues would not likely occur in a ß sheet? 180 120 60 -60 -120 -180 -180 180 + (degrees) OA. 0=-51°; U=+153°; many Gly and Pro residues D=+60°; u=+60°; many Gly residues В. OC. D=-57°; W=-49°; many Ala residues D=-139°; W=+135°; many Val residues OD. D=-120°; U=+120°; many Tyr residues DE. (səəbap)
Transcribed Image Text:The carbon-nitrogen peptide bond is rigid, but rotation can take place about the N-Ca and the Ca-C bonds in a protein (Ca is the a carbon atom). These bond angles define the conformation of the peptide chain. Consider the Ramachandran plot to answer both questions. Which dihedral angles and residues would not likely occur in a ß sheet? 180 120 60 -60 -120 -180 -180 180 + (degrees) OA. 0=-51°; U=+153°; many Gly and Pro residues D=+60°; u=+60°; many Gly residues В. OC. D=-57°; W=-49°; many Ala residues D=-139°; W=+135°; many Val residues OD. D=-120°; U=+120°; many Tyr residues DE. (səəbap)
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