Compare and contrast the roles of a corepressor and an inducer in negative regulation of an operon.

Question

Want to see more full solutions like this?

Answer 1

Textbook Question

Chapter 18, Problem 18.1CR

Compare and contrast the roles of a corepressor and an inducer in negative regulation of an operon.

Expert Solution & Answer

Summary Introduction

To compare: The functions of a corepressor and an inducer in negative regulation of an operon.

Introduction: Gene regulation is the process through which the cells control the expression of genes. It controls genes that are expressed to form a specific functional protein depending on the cell type. There are mechanisms that control gene expression at different levels.

Explanation of Solution

Operon contains coding DNA sequences, regulatory DNA sequences, and the regulatory proteins. Regulatory proteins act as both activators (TURN ON) and repressors (TURN OFF) of genes.

The similarities between corepressor and an inducer in negative regulation of an operon are as follows:

Both are small molecules that bind to the repressor protein present in an operon, causing the repressor to change its shape.

The differences between the roles of a corepressor and an inducer in negative regulation of an operon are as follows:

Characteristics

Corepressor

Inducer

Role in negative regulation of an operon

A corepressor binds to the repressor protein, activates it to bind to the operator, and thereby inhibits transcription.

For example, tryptophan acts as a corepressor in a trp operon.

The binding of an inducer to the repressor protein makes it inactive and allows transcription of operon genes.

For example, allolactose acts as an inducer in lac operon and binds to the lac repressor; hence, it cannot bind to the operator.

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

8. Aerobic respiration of a 5 mM solution of tripeptide that is composed of the following three amino acids; alanine, leucine and isoleucine. Alanine breaks down to pyruvate, leucine breaks down to Acetyl-CoA and isoleucine breaks down to succinyl-CoA. Alanine NADH FADH2 OP ATP SLP ATP Total ATP Leucine Isoleucine Totals Show your work using dimensional analysis here: 4

9. Aerobic respiration of one lipid molecule. The lipid is composed of one glycerol molecule connected to two fatty acid tails. One fatty acid is 12 carbons long and the other fatty acid is 18 carbons long in the figure below. Use the information below to determine how much ATP will be produced from the glycerol part of the lipid. Then, in part B, determine how much ATP is produced from the 2 fatty acids of the lipid. Finally put the NADH and ATP yields together from the glycerol and fatty acids (part A and B) to determine your total number of ATP produced per lipid. Assume no other carbon source is available. fatty acids glycerol 18 carbons 12 carbons 0=

influences of environment on the phenotype.

Answer 2

Textbook Question

Chapter 18, Problem 18.1CR

Compare and contrast the roles of a corepressor and an inducer in negative regulation of an operon.

Expert Solution & Answer

Summary Introduction

To compare: The functions of a corepressor and an inducer in negative regulation of an operon.

Introduction: Gene regulation is the process through which the cells control the expression of genes. It controls genes that are expressed to form a specific functional protein depending on the cell type. There are mechanisms that control gene expression at different levels.

Explanation of Solution

Operon contains coding DNA sequences, regulatory DNA sequences, and the regulatory proteins. Regulatory proteins act as both activators (TURN ON) and repressors (TURN OFF) of genes.

The similarities between corepressor and an inducer in negative regulation of an operon are as follows:

Both are small molecules that bind to the repressor protein present in an operon, causing the repressor to change its shape.

The differences between the roles of a corepressor and an inducer in negative regulation of an operon are as follows:

Characteristics

Corepressor

Inducer

Role in negative regulation of an operon

A corepressor binds to the repressor protein, activates it to bind to the operator, and thereby inhibits transcription.

For example, tryptophan acts as a corepressor in a trp operon.

The binding of an inducer to the repressor protein makes it inactive and allows transcription of operon genes.

For example, allolactose acts as an inducer in lac operon and binds to the lac repressor; hence, it cannot bind to the operator.

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!

Answer 3

Textbook Question

Chapter 18, Problem 18.1CR

Compare and contrast the roles of a corepressor and an inducer in negative regulation of an operon.

Expert Solution & Answer

Summary Introduction

To compare: The functions of a corepressor and an inducer in negative regulation of an operon.

Introduction: Gene regulation is the process through which the cells control the expression of genes. It controls genes that are expressed to form a specific functional protein depending on the cell type. There are mechanisms that control gene expression at different levels.

Explanation of Solution

Operon contains coding DNA sequences, regulatory DNA sequences, and the regulatory proteins. Regulatory proteins act as both activators (TURN ON) and repressors (TURN OFF) of genes.

The similarities between corepressor and an inducer in negative regulation of an operon are as follows:

Both are small molecules that bind to the repressor protein present in an operon, causing the repressor to change its shape.

The differences between the roles of a corepressor and an inducer in negative regulation of an operon are as follows:

Characteristics

Corepressor

Inducer

Role in negative regulation of an operon

A corepressor binds to the repressor protein, activates it to bind to the operator, and thereby inhibits transcription.

For example, tryptophan acts as a corepressor in a trp operon.

The binding of an inducer to the repressor protein makes it inactive and allows transcription of operon genes.

For example, allolactose acts as an inducer in lac operon and binds to the lac repressor; hence, it cannot bind to the operator.

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!

Answer 4

Textbook Question

Chapter 18, Problem 18.1CR

Compare and contrast the roles of a corepressor and an inducer in negative regulation of an operon.

Expert Solution & Answer

Summary Introduction

To compare: The functions of a corepressor and an inducer in negative regulation of an operon.

Introduction: Gene regulation is the process through which the cells control the expression of genes. It controls genes that are expressed to form a specific functional protein depending on the cell type. There are mechanisms that control gene expression at different levels.

Explanation of Solution

Operon contains coding DNA sequences, regulatory DNA sequences, and the regulatory proteins. Regulatory proteins act as both activators (TURN ON) and repressors (TURN OFF) of genes.

The similarities between corepressor and an inducer in negative regulation of an operon are as follows:

Both are small molecules that bind to the repressor protein present in an operon, causing the repressor to change its shape.

The differences between the roles of a corepressor and an inducer in negative regulation of an operon are as follows:

Characteristics

Corepressor

Inducer

Role in negative regulation of an operon

A corepressor binds to the repressor protein, activates it to bind to the operator, and thereby inhibits transcription.

For example, tryptophan acts as a corepressor in a trp operon.

The binding of an inducer to the repressor protein makes it inactive and allows transcription of operon genes.

For example, allolactose acts as an inducer in lac operon and binds to the lac repressor; hence, it cannot bind to the operator.

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!

Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

Summary Introduction

To compare: The functions of a corepressor and an inducer in negative regulation of an operon.

Introduction: Gene regulation is the process through which the cells control the expression of genes. It controls genes that are expressed to form a specific functional protein depending on the cell type. There are mechanisms that control gene expression at different levels.

Explanation of Solution

Operon contains coding DNA sequences, regulatory DNA sequences, and the regulatory proteins. Regulatory proteins act as both activators (TURN ON) and repressors (TURN OFF) of genes.

The similarities between corepressor and an inducer in negative regulation of an operon are as follows:

Both are small molecules that bind to the repressor protein present in an operon, causing the repressor to change its shape.

The differences between the roles of a corepressor and an inducer in negative regulation of an operon are as follows:

Characteristics

Corepressor

Inducer

Role in negative regulation of an operon

A corepressor binds to the repressor protein, activates it to bind to the operator, and thereby inhibits transcription.

For example, tryptophan acts as a corepressor in a trp operon.

The binding of an inducer to the repressor protein makes it inactive and allows transcription of operon genes.

For example, allolactose acts as an inducer in lac operon and binds to the lac repressor; hence, it cannot bind to the operator.

Answer 8

Expert Solution & Answer

Summary Introduction

To compare: The functions of a corepressor and an inducer in negative regulation of an operon.

Introduction: Gene regulation is the process through which the cells control the expression of genes. It controls genes that are expressed to form a specific functional protein depending on the cell type. There are mechanisms that control gene expression at different levels.

Explanation of Solution

Operon contains coding DNA sequences, regulatory DNA sequences, and the regulatory proteins. Regulatory proteins act as both activators (TURN ON) and repressors (TURN OFF) of genes.

The similarities between corepressor and an inducer in negative regulation of an operon are as follows:

Both are small molecules that bind to the repressor protein present in an operon, causing the repressor to change its shape.

The differences between the roles of a corepressor and an inducer in negative regulation of an operon are as follows:

Characteristics

Corepressor

Inducer

Role in negative regulation of an operon

A corepressor binds to the repressor protein, activates it to bind to the operator, and thereby inhibits transcription.

For example, tryptophan acts as a corepressor in a trp operon.

The binding of an inducer to the repressor protein makes it inactive and allows transcription of operon genes.

For example, allolactose acts as an inducer in lac operon and binds to the lac repressor; hence, it cannot bind to the operator.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

To compare: The functions of a corepressor and an inducer in negative regulation of an operon.

Introduction: Gene regulation is the process through which the cells control the expression of genes. It controls genes that are expressed to form a specific functional protein depending on the cell type. There are mechanisms that control gene expression at different levels.

Answer 12

Explanation of Solution

Operon contains coding DNA sequences, regulatory DNA sequences, and the regulatory proteins. Regulatory proteins act as both activators (TURN ON) and repressors (TURN OFF) of genes.

The similarities between corepressor and an inducer in negative regulation of an operon are as follows:

Both are small molecules that bind to the repressor protein present in an operon, causing the repressor to change its shape.

The differences between the roles of a corepressor and an inducer in negative regulation of an operon are as follows:

Characteristics

Corepressor

Inducer

Role in negative regulation of an operon

A corepressor binds to the repressor protein, activates it to bind to the operator, and thereby inhibits transcription.

For example, tryptophan acts as a corepressor in a trp operon.

The binding of an inducer to the repressor protein makes it inactive and allows transcription of operon genes.

For example, allolactose acts as an inducer in lac operon and binds to the lac repressor; hence, it cannot bind to the operator.

Answer 13

Ch. 18.1 - How does binding of the trp corepressor to the trp...Ch. 18.1 - Describe the binding of RNA Polymerase,...Ch. 18.1 - WHAT IF? A certain mutation in E. coli changes...Ch. 18.2 - In general, what are the effects of histone...Ch. 18.2 - Compare the roles of general and specific...Ch. 18.2 - WHAT IF? Suppose you compared the nucleotide...Ch. 18.2 - Once mRNA encoding a particular protein reaches...Ch. 18.3 - Compare miRNAs and siRNAs, including their...Ch. 18.3 - WH AT IF? Suppose the mRNA being degraded in...Ch. 18.4 - MAKE CONNECTIONS As you learned in Chapter 12,...

Compare and contrast the roles of a corepressor and an inducer in negative regulation of an operon.

Concept explainers

Videos

Explanation of Solution

Want to see more full solutions like this?

Chapter 18 Solutions

Additional Science Textbook Solutions