Biochemistry
6th Edition
ISBN: 9781305577206
Author: Reginald H. Garrett, Charles M. Grisham
Publisher: Cengage Learning
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Chapter 29, Problem 14P
The Lariat Intermediate in RNA Splicing Draw the structures that comprise the lariat branch point formed during mRNA splicing: the invariant A. its 5’-R neighbor, its 3’-Y neighbor, and its 2’-G neighbor.
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In eukaryotes there is not a consistent relationship between the length of the coding sequence of a gene and the length of the mature mRNA it encodes, even though one nucleotide in DNA = one nucleotide in pre-mRNA or primary transcript. Explain why this is so.
Help me figure out how I should interpret and read these graphs. We are looking to see whether the m6a acceptor mutant will have an impact on splicing. Just need a detail breakdown thanks. I am presenting at journal club and need help interpreting will the goals in mind.
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Splicing machinery must recognize three portions of the precursor RNA molecule: the 5’ splice site, the 3’ splice site, and the exon junction complex (EJC).
True or false
Chapter 29 Solutions
Biochemistry
Ch. 29 - Prob. 1PCh. 29 - The Events in Transcription Initiation Describe...Ch. 29 - Substrate Binding by RNA Polymerase RNA polymerase...Ch. 29 - Comparison of Prokaryotic and Eukaryotic...Ch. 29 - Prob. 5PCh. 29 - Prob. 6PCh. 29 - Prob. 7PCh. 29 - Alternative Splicing Possibilities Suppose exon 17...Ch. 29 - Prob. 9PCh. 29 - Prob. 10P
Ch. 29 - Post-transcriptional Modification of Eukaryotic...Ch. 29 - Prob. 12PCh. 29 - Prob. 13PCh. 29 - The Lariat Intermediate in RNA Splicing Draw the...Ch. 29 - Prob. 15PCh. 29 - Prob. 16PCh. 29 - Prob. 17PCh. 29 - Prob. 18PCh. 29 - Figure 29.15 highlights in red the DNA phosphate...Ch. 29 - Chromatin decompaction is a preliminary step in...
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- One procedure of obtaining cDNA from mRNA is by using oligo(dT) primers. What are oligo(dT)s? Why does using them make sense based on the processing (or modification) of precursor mRNA to get mature mRNA?arrow_forwardBased on your knowledge of introns and pre-mRNA splicing, discuss whether or not you think alternative splicing fully explains the existence of introns. Can you think of other possible reasons to explain their existence?arrow_forwardWhat is the peptide encoded by this mRNA sequence 5’-UCU-GCA- AAU-UAA -GUU-3’?arrow_forward
- Given the following mRNA transcript: 5’-UUUGGCAUGGGUAUCGUAGAGAUGGAAUUCAUAGUGGAGUAA-3’ What is the one-letter abbreviation of the protein product of the mRNA transcript?arrow_forwardTranscription occurs at a rate of about 30 nucleotides per second. is it possible to calculate the time required to synthesize a titin mRNA from the information given here?arrow_forwardDraw a pre-mRNA with at least 4 exons and 3 introns and draw two possible mature mRNAs that can result from alternative splicing of this RNA.arrow_forward
- Aminoacyl-tRNA synthetases are the only component of gene expression that decodes the genetic code. Explain.arrow_forwardWhat will be the overall anti-codon sequence in tRNA for this mRNA? 5’-GUAGCCUUAUCUAGCGAUCACCGUCCGUAUUACUAGUGGCCAGACUCUUUUCACCAUGUAUAGUUG-3’arrow_forwardA hypothetical tripeptide Leu-Leu-Leu could be synthesized by the cell. What three different base triplets in mRNA could be combined to code for this tripeptide?arrow_forward
- RNA splicing is catalyzed by snRNAs and snRNPs which together constitute the spliceosome. Explain what are the roles of snRNPs during initiation of RNA splicing.arrow_forwardDuring periods of starvation, translation of only vital mRNAs must occur inside a cell. Explain how eIF2 can mediate both the suppression of translation of non-essential mRNAs and ensure that essential mRNAs continues to be translated.arrow_forwardIntrons are often very large and the cell has devoted mechanisms of eliminating them once they are excised from the pre-mRNA. Following intron excision, what specific ribonucleolytic enzymes or complexes contribute to eliminating the intron RNA immediately after it is excised from the pre-mRNA? Briefly describe the role of each step/enzyme and how it affects its RNA substratearrow_forward
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