Brock Biology of Microorganisms Plus Mastering Microbiology with Pearson eText -- Access Card Package (15th Edition)
15th Edition
ISBN: 9780134268668
Author: MADIGAN
Publisher: PEARSON
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Textbook Question
Chapter 6.5, Problem 3MQ
- Explain how the Pyrococcus furiosus TrmBL1 transcription regulator is able to act as both an activator and a repressor.
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Chapter 6 Solutions
Brock Biology of Microorganisms Plus Mastering Microbiology with Pearson eText -- Access Card Package (15th Edition)
Ch. 6.1 - What is protein domain?Ch. 6.1 - Why are most DMA-binding proteins specific to...Ch. 6.1 - Describe why a protein that binds to a specific...Ch. 6.2 - Why is negative control so named?Ch. 6.2 - How does a repressor inhibit the synthesis of a...Ch. 6.2 - Induction is considered the opposite of enzyme...Ch. 6.3 - Prob. 1MQCh. 6.3 - Prob. 2MQCh. 6.3 - What is the difference between an operon and a...Ch. 6.4 - Prob. 1MQ
Ch. 6.4 - Prob. 2MQCh. 6.4 - Explain how the lac operon is both positively and...Ch. 6.4 - Prob. 1CRCh. 6.5 - What is the major difference between...Ch. 6.5 - How do transcriptional activators in Archaea often...Ch. 6.5 - Explain how the Pyrococcus furiosus TrmBL1...Ch. 6.5 - Prob. 1CRCh. 6.6 - What are kinases and what is their role in...Ch. 6.6 - Prob. 2MQCh. 6.6 - Prob. 1CRCh. 6.7 - What are the primary response regulator and the...Ch. 6.7 - Why is adaptation during chemotaxis important?Ch. 6.7 - How does the response of the chemortaxis system to...Ch. 6.7 - Adaptation allows the mechanism controlling...Ch. 6.8 - What advantage do quorum-sensing systems confer on...Ch. 6.8 - Prob. 2MQCh. 6.8 - Prob. 3MQCh. 6.8 - How can quorum sensing be considered a regulatory...Ch. 6.9 - Which Escherichia coli genes are activated and...Ch. 6.9 - Prob. 2MQCh. 6.9 - What are some other conditions that trigger the...Ch. 6.9 - Explain the sequence of molecular events that...Ch. 6.10 - Prob. 1MQCh. 6.10 - Prob. 2MQCh. 6.10 - Prob. 3MQCh. 6.10 - Prob. 1CRCh. 6.11 - Prob. 1MQCh. 6.11 - Prob. 2MQCh. 6.11 - Prob. 3MQCh. 6.11 - What are the mechanisms by which regulation by...Ch. 6.12 - What happens when a riboswitch binds the small...Ch. 6.12 - What are the major differences between a repressor...Ch. 6.12 - What is the mechanism by which a riboswitch...Ch. 6.13 - Why does attenuation control not occur in...Ch. 6.13 - Prob. 2MQCh. 6.13 - Prob. 1CRCh. 6.14 - What is feedback inhibition?Ch. 6.14 - Prob. 2MQCh. 6.14 - Prob. 3MQCh. 6.14 - Describe how feedback inhibition is reversible.Ch. 6.15 - What types of covalent modifications commonly...Ch. 6.15 - Prob. 2MQCh. 6.15 - Explain the role of an anti-sigma factor.Ch. 6.15 - Which nucleotides are commonly used to covalently...Ch. 6 - What would happen to regulation from a promoter...Ch. 6 - Most of the regulatory systems described in this...Ch. 6 - Many amino acid biosynthetic operons under...Ch. 6 - How would you design a regulatory system to make...
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- Which molecules act as co-repressor for pur respressor in prokaryotes?arrow_forwardIn terms of the trp operon, differentiate between two normal bacterial cultures, one grown in a medium supplied with tryptophan and the other medium without tryptophan.arrow_forwardWhy is it beneficial for the bacterium to regulate the lac operon with both a repressor protein and an activator protein?arrow_forward
- Describe how transcription is terminated with and without Rho factor.arrow_forwardExplain how catabolite repression depends on an activatorproteinarrow_forwardDescribe how the components of the trp operon system are affected by a mutation in trpC? Why is it that once enviornmental tryptophan is inserted into the cell, only the trp repressor is activated (turned on)?arrow_forward
- What would happen if the operator sequence of the trp operon contained a mutation that prevented the repressor protein from binding to the operator? (Explain what would happen in both the presence and absence of tryptophan)arrow_forwardDiscuss in general terms the principle of the regulation of theexpression of the trp gene with attenuation in bacteria.arrow_forwardYou discover that one of your novel class IV transcription factors contains TBP. Describe an experiment you would perform to identify the TAFs in this factor.arrow_forward
- How does the tryptophan operan turn back on in gene regulation?arrow_forwardExplain how the pausing of the ribosome in the presence or absence of tryptophan affects the formation of a terminator (3–4) stem-loop, and describe how this affects transcription.arrow_forwardExplain the fundamental differences between negative control and positive control of transcription in prokaryotes. Cite two examples of each control mechanism.arrow_forward
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