Brock Biology of Microorganisms (15th Edition)
15th Edition
ISBN: 9780134261928
Author: Michael T. Madigan, Kelly S. Bender, Daniel H. Buckley, W. Matthew Sattley, David A. Stahl
Publisher: PEARSON
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Chapter 12.13, Problem 2MQ
- How can a tRNA be engineered to encode for a synthetic amino acid?
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What is the function of the anticodon of a tRNA?
Yeast have 8 similar tRNA genes with the anticodon 5’-GUA. A researcher mutates one of these genes to change its anticodon to 5’-GUU.
a) What codon did the tRNA originally decode?
b) What codon does the mutated tRNA decode?
Yeast have 8 similar tRNA genes with the anticodon 5'-GUA. A researcher mutates one of these genes to change its anticodon to 5'-GUU.
a) What codon did the tRNA originally decode? Name the amino acid.
b) What codon does the mutated tRNA decode? Name the amino acid.
Chapter 12 Solutions
Brock Biology of Microorganisms (15th Edition)
Ch. 12.1 - Why is a primer needed at each end of the DNA...Ch. 12.1 - How does RT-PCR differ from traditional PCR?Ch. 12.1 - Prob. 3MQCh. 12.1 - Describe the basic principles of gene...Ch. 12.2 - What is the purpose of molecular cloning?Ch. 12.2 - Prob. 2MQCh. 12.2 - Prob. 3MQCh. 12.2 - Prob. 1CRCh. 12.3 - How can the bacteriophage T7 promoter be used to...Ch. 12.3 - What major advantage does cloning mammalian genes...
Ch. 12.3 - Prob. 3MQCh. 12.3 - Prob. 1CRCh. 12.4 - How can site-directed mutagenesis be useful to...Ch. 12.4 - What is used to alter more than a few base pairs...Ch. 12.4 - What are knockout mutations?Ch. 12.4 - What does site-directed mutagenesis allow you to...Ch. 12.5 - What is a reporter gene? The product of which...Ch. 12.5 - Prob. 2MQCh. 12.5 - Describe two widely used reporter genes.Ch. 12.6 - Prob. 1MQCh. 12.6 - Prob. 2MQCh. 12.6 - Prob. 3MQCh. 12.6 - Prob. 1CRCh. 12.7 - Prob. 1MQCh. 12.7 - Give an example of a genetically modified plant...Ch. 12.7 - How have transgenic salmon been engineered to...Ch. 12.7 - What is the Ti plasmid and how has it been of use...Ch. 12.8 - Explain why recombinant vaccines might be safer...Ch. 12.8 - Prob. 2MQCh. 12.8 - Prob. 3MQCh. 12.8 - What is a subunit vaccine and why are subunit...Ch. 12.9 - Explain why metagenomic cloning gives large...Ch. 12.9 - What types of environments are often sampled to...Ch. 12.9 - Prob. 3MQCh. 12.9 - How has metagenomics been used to find novel...Ch. 12.10 - How has Caldicellulosiruptor been modified to...Ch. 12.10 - Prob. 2MQCh. 12.10 - What has been the limiting factor in engineering...Ch. 12.10 - Prob. 1CRCh. 12.11 - What are biobricks?Ch. 12.11 - Prob. 2MQCh. 12.11 - How was Escherichia coli modified to produce a...Ch. 12.11 - Prob. 1CRCh. 12.12 - Prob. 1MQCh. 12.12 - Prob. 2MQCh. 12.12 - How is recombinant DNA inserted into a genome...Ch. 12.12 - How has the CRISPR editing technology been applied...Ch. 12.13 - Prob. 1MQCh. 12.13 - How can a tRNA be engineered to encode for a...Ch. 12.13 - Prob. 3MQCh. 12.13 - What are some mechanisms for controlling a...Ch. 12 - Suppose you have just determined the DNA base...Ch. 12 - Prob. 2AQCh. 12 - Prob. 3AQCh. 12 - Describe how you could recode Escherichia coli to...
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- What are the function of initiator Trna?arrow_forwardExplain why a minimum of 32 tRNAs are required to translate the “standard” genetic code.arrow_forwardConsider the tryptophan codon 5′ - UGG - 3′ in the standard genetic code . Can a single base change in this codon create a synonymous mutation? Can a single base change in this codon create a nonsense codon?arrow_forward
- a) Design an mRNA sequence that would be translated by this system as a polypeptide consisting of alternating His and Thr. b) If you use a natural RNA polymerase extracted from E. coli, what modification you need to do to your synthetic mRNA to produce the polypeptide consisting of alternating His and Thr?arrow_forwardThe anticodon loop of one of the tRNA Gly molecules from Escherichia coli is as follows: a) Identify the anticodon, reading from 3’ to 5’. b) This tRNA recognizes a Gly codon. What is it? Write it from 5’ to 3’.arrow_forwardHow do the stop codons UAA, UAG, and UGA know to form? What if a protein stops synthesizing too early or too late?arrow_forward
- If the genetic code used 4 bases at a time, how many amino acids could be encoded?arrow_forwardWhat is the result of Frameshift mutations from the insertion or deletion of nucleotides within the coding sequence?arrow_forwarda) What is a mutation in molecular terms? b) a mutation deletes a base in the genomic DNA discuss how that will affect the reading frame and expression product production. Using the following list of codons describe, using diagrams etc., how information stored in the DNA is translated into a peptide. Be sure to discuss all steps. In other words, use a diagram and give me sequences, transcription and translation steps. Show the sequences of the sense and the other DNA strand, the mRNA and the tRNA’s. UUU -phenylalanine UCU -serine AUG –initiation/methionine CUU -leucine ACU -threonine GUU -valine UAA -Terminationarrow_forward
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