Brock Biology of Microorganisms (15th Edition)
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
bartleby

Videos

Textbook Question
Book Icon
Chapter 6, Problem 1AQ

What would happen to regulation from a promoter under negative control if the region where the regulatory protein binds was deleted? What If the promoter was under positive control? Promoters from Escherichia coli under positive control are not close matches to the promoter consensus sequence for E., coll. Why?

Expert Solution
Check Mark
Summary Introduction

To explain:

What would happen to regulation process from a promoter under negative control if the region where the regulatory protein binds was deleted. What if the promoter was under positive control.

Concept introduction:

The regulation of transcription is effective in negative control, because the cell needs the signal for the presence of enough biosynthetic products for their growth. The transcription is also controlled by both negatively or positively because of the presence of lactose and absence of glucose in the culture medium.

Explanation of Solution

The operonal gene products are produced in high amount when the regulatory protein-binding region of a promoter are deleted under negative control. Because of the repressor protein cannot bind to the promoter region. The operonal gene products are not produced when the regulatory protein-binding region of a promoter are deleted. This is because of the activator which cannot attach itself to the promoter region.

Expert Solution
Check Mark
Summary Introduction

To explain:

Promoters from Escherichia coli under positive control are not close matches to the promoter consensus sequence for E. coli. Why.

Concept introduction:

The regulation of transcription is effective in negative control, because the cell needs the signal for the presence of enough biosynthetic products for their growth. The transcription is also controlled by both negatively or positively because of the presence of lactose and absence of glucose in the culture medium.

Explanation of Solution

The DNA consequences matches closely with the promoter region that leads to the binding of the RNA polymerase to the promoter region and stimulates the transcription without the presence of other factors. Thus, a quite different transcription control is seen in the promoters under positive control.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
19. On the diagram below a. Label the three pictures as: DNA; polypeptide; or RNA. b. Label the arrows as: translation or transcription/RNA processing. c. Add the following details to the diagram. Promoter region TATA box Transcription start site Transcription terminator Intron (A,B,C,D) Exons (1,2,3,4,5) Splice sites 5' cap 5' UTR (untranslated region) 3' poly A tail 3' UTR (untranslated region) Translational start (AUG) Translational stop (UGA, UAG, or UAA) N and C ends of polypeptide 0000
Match the letter labels in the figure below to the terms. Some letter labels are not used. MNNNNNNIN M C B A M D F E H K G 8
The diagram below illustrates a quorum sensing pathway from Staphylococcus aureus. Please answer the following questions. 1. Autoinduction is part of the quorum sensing system. Which promoter (P2 or P3) is critical for autoinduction? 2)This staphylococcus aureus grows on human wounds, causing severe infections. You would like to start a clinical trial to treat these wound infections. Please describe: a) What molecule do you recommend for the trial. Why? b) Your trial requires that Staphylococcus aureus be isolated from the wound and submitted to genome sequencing before admittance. Why? What are you testing for?  3) If a mutation arises where the Promoter P3 is constitutively active, how would that influence sensitivity to AIP? Please explain your rationale. 4) This pathway is sensitive to bacterial cell density. Describe two separate mutation that would render the pathway active independent of cell density. Briefly explain your rationale. Mutation 1 Mutation 2

Chapter 6 Solutions

Brock Biology of Microorganisms (15th Edition)

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...
Knowledge Booster
Background pattern image
Biology
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Text book image
Biology Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Text book image
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
Text book image
Biochemistry
Biochemistry
ISBN:9781305577206
Author:Reginald H. Garrett, Charles M. Grisham
Publisher:Cengage Learning
Text book image
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Text book image
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
QCE Biology: Introduction to Gene Expression; Author: Atomi;https://www.youtube.com/watch?v=a7hydUtCIJk;License: Standard YouTube License, CC-BY