1. Use the dihedral angles depicted in theimage. Which pairs of dihedral anglescould represent:a. Phi and Psi for a residue in analpha helix?(b)(c)(d)(e)(f)b. Phi and Psi for a residue in a betasheet?**Hint: you can look up an image of the Ramachandran plot to help.

Here is a detailed explanation: Alpha helices and beta sheets are fundamental secondary structures…

Answered: 1. Use the dihedral angles depicted in…

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

Problem 1P

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H2N 1.) Look carefully at this nucleotide: N: N- Но-Р-О OH a.) Number the carbons in the sugar group. (Remember the "prime" symbols.) b.) Is this a purine or a pyrimidine? How do you know? c.) Would this nucleotide be used for DNA or RNA? How do you know? (Be specific.) d.) Is this nucleotide ready to be used for DNA replication or RNA transcription? Why/why not? e.) If this nucleotide were incorporated into a growing DNA or RNA strand, where would the next added nucleotide be attached to this one?
8. NMR measurements have shown that poly-lysine is a random coil at pH 7 but becomes a helix when the pH is raised above 10. If the same type of folding behavior is observed, what should be the pH dependence of poly-glutamate? A) Helix at pH 7 but random coil at pH 10 B) Random coil at pH 3 but helix at pH 7 C) Random coil at pH 7 but helix at pH 10 D) Helix at pH 3 but random coil at pH 7
What is the function of the molecular chaperone? What would happen to the protein if molecular machine does not work?
Please don't provide handwritten solution .....
In the attached picture, how can you tell what is the phosphate vs. the deoxyribose?
RNA was isolated from a tissue with a solution buffered at pH 12. However, no RNA was obtained. Why? a. The 5’ OH group of the ribose is protonated (positive charged) at pH 12 and reacts with the phosphorus atom to cleave the phosphodiester bond. b. The 5’ OH group of the ribose is deprotonated (negative charged) at pH 12 and reacts with the phosphorus atom to cleave the phosphodiester bond. c. The 2’ OH group of the ribose is deprotonated (negative charged) at pH 12 and reacts with the phosphorus atom to cleave the phosphodiester bond. d. The 2’ OH group of the ribose is protonated (positive charged) at pH 12 and reacts with the phosphorus atom to cleave the phosphodiester bond.
Double stranded nucleic acids are stabilized by all of the following except: A. Hydrophobic stacking between bases B. Hydrogen bonding between pyrimidines and purines C. Repulsion of phosphate groups D. Phosphodiester backbones E. Hydrogen bonding via ether linkages

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1. Use the dihedral angles depicted in the image. Which pairs of dihedral angles could represent: a. Phi and Psi for a residue in an alpha helix? (b) (c) (d) (e) (f) b. Phi and Psi for a residue in a beta sheet? **Hint: you can look up an image of the Ramachandran plot to help.