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 6.5, Problem 1CR
Summary Introduction
Methanococcus maripaludis is a methanogen which has NrpR protein that acts as the best example of an archaeal repressor. The nitrogen fixation and the production of glutamine amino acid are the function of nitrogen assimilation that is performed by the genes of NrpR repressor genes.
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Most bacterial repressor proteins are allosteric. Which of the following binds with the repressor to alter its conformation?
A) promoter
B) corepressor
C) ATP
a)Describe the process of transcription in prokaryotes
b) Explain how proteins can be targeted for specific sites within the cell
What are the two components that give their nameto the signal transduction system in prokaryotic cells?What is the function of each of the components?
Chapter 6 Solutions
Brock Biology of Microorganisms (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 will be bound to the Lac Operon in an environment with lactose and glucose? A) both repressor and CAP B) repressor only C) CAP only D) neither repressor nor CAParrow_forwardDescribe and give an example of each of the following levels of gene expression control in eukaryotes: a) epigenetic control b) transcriptional control c) post-transcriptional control d) translational control e) post-translational controlarrow_forwardi)Describe attenuation control and how it is used to regulate gene expression. ii)Give a specific example of how this works? iii)Could this be used in eukaryotes? why ?or why not?arrow_forward
- When taken up by a cell, which of the following molecules binds to a repressor so that the repressor no longer binds to the operator? a) inducer b) promoter c) repressor d) corepressorarrow_forwardWhat are the exact factors that can cause Post transcriptional modification of cytoskeletal protiens and what is its effect on the dynamics of cytoskeletal protien.arrow_forwardWhat three major components make up an archaeal promoter?arrow_forward
- Describe what would happen to the lac operon in a low-lactose environment and in a high lactose environment. a) How will each of these environments affect gene expression? b) What would happen to the repressor in each case? c) How will each of these environments affect RNA polymerase?arrow_forwardi)Describe a strategy for regulation of transcription in eukaryotes. ii)Explain how this strategy is different than what might be used by a prokaryote.arrow_forwardWhat is the effect of an increased Cro concentration on the expression of the gene for the λ repressor? Of an increased concentration of λ repressor on the expression of the Cro gene? Of an increased concentration of λ repressor on the expression of the λ repressor gene?arrow_forward
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