Biochemistry
9th Edition
ISBN: 9781319114671
Author: Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher: W. H. Freeman
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Question
Chapter 31, Problem 50P
Interpretation Introduction
Interpretation:
The reason should be determined for the same shape of all tRNAs.
Concept introduction:
ThetRNA (transfer ribonucleic acid) is a type of RNA, which decodes mRNA into a protein sequence. During the process of translation, tRNAs bind to specific sites on the ribosome. For each codon on mRNA, there is an anticodon on tRNA. Binding of these two RNAs helps in the proper synthesis of proteins.
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Briefly describe the 2-dimensional and 3-dimensional structure of tRNA . With diagram.
All tRNAs from all organisms have the same overall shape. Explain why this is the case.
TRNAS do vary in length.
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Chapter 31 Solutions
Biochemistry
Ch. 31 - Prob. 1PCh. 31 - Prob. 2PCh. 31 - Prob. 3PCh. 31 - Prob. 4PCh. 31 - Prob. 5PCh. 31 - Prob. 6PCh. 31 - Prob. 7PCh. 31 - Prob. 8PCh. 31 - Prob. 9PCh. 31 - Prob. 10P
Ch. 31 - Prob. 11PCh. 31 - Prob. 12PCh. 31 - Prob. 13PCh. 31 - Prob. 14PCh. 31 - Prob. 15PCh. 31 - Prob. 16PCh. 31 - Prob. 17PCh. 31 - Prob. 18PCh. 31 - Prob. 19PCh. 31 - Prob. 20PCh. 31 - Prob. 21PCh. 31 - Prob. 22PCh. 31 - Prob. 23PCh. 31 - Prob. 24PCh. 31 - Prob. 25PCh. 31 - Prob. 26PCh. 31 - Prob. 27PCh. 31 - Prob. 28PCh. 31 - Prob. 29PCh. 31 - Prob. 30PCh. 31 - Prob. 31PCh. 31 - Prob. 32PCh. 31 - Prob. 33PCh. 31 - Prob. 34PCh. 31 - Prob. 35PCh. 31 - Prob. 36PCh. 31 - Prob. 37PCh. 31 - Prob. 38PCh. 31 - Prob. 39PCh. 31 - Prob. 40PCh. 31 - Prob. 41PCh. 31 - Prob. 42PCh. 31 - Prob. 43PCh. 31 - Prob. 44PCh. 31 - Prob. 45PCh. 31 - Prob. 46PCh. 31 - Prob. 47PCh. 31 - Prob. 48PCh. 31 - Prob. 49PCh. 31 - Prob. 50PCh. 31 - Prob. 51PCh. 31 - Prob. 52P
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- Describe the structural and sequence elements that are common to all tRNA molecules, addressing the function of each of the elements. What forces stabilize the tRNAs' structural features?arrow_forwardOrnithine is structurally similar to lysine except ornithine’s side chain is one methylene group shorter than that of lysine. Attempts to chemically synthesize and isolate ornithinyl-tRNA proved unsuccessful. Propose a mechanistic explanation. (Hint: Six-membered rings are more stable than sevenmembered rings.)arrow_forwardA lot of time and energy put into creating tRNAs; why?arrow_forward
- Determine the codon sequence for the peptide sequence glycylserylcysteinylarginylalanine. How many possibilities are there?arrow_forwardThe ribosome can transfer any peptidyl group from the P-site tRNA to any aminoacyl group on the A-site RNA, but the rate may vary with the identities of those groups. Propose an explanation why the ribosome synthesizes poly-Pro sequences extremely slowly compared to other peptide sequences.arrow_forwardAminoacyl-tRNA synthetase joins amino acids to their cognate trna. Briefly discuss the two reactions of aminoacylation.arrow_forward
- What is the significance (or function) of tRNA in protein synthesis? In other words, explain why tRNA is so important. How many different tRNA’s are there?arrow_forwardwhy a literature sequence for Mpro includes additional 18 bases on the C-term that can not be found in the nature protein. what is the purpose of these bases?arrow_forwardUsing Fig. as a guide, draw the complete structure of a nucleoside triphosphate before and after it becomes incorporated into a polynucleotide chain. Draw the structure that would result if the newly formed phosphodiester bond were hydrolyzed.arrow_forward
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