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Chapter 14: Problem 4

Transcriptional regulation often involves a regulatory protein that binds to a segment of DNA and a small effector molecule that binds to the regulatory protein. Do each of the following terms apply to a regulatory protein, a segment of DNA, or a small effector molecule? A. Repressor B. Inducer C. Operator site D. Corepressor E. Activator F. Attenuator G. Inhibitor

Short Answer

Expert verified
A. Repressor - Regulatory Protein, B. Inducer - Small Effector Molecule, C. Operator Site - Segment of DNA, D. Corepressor - Small Effector Molecule, E. Activator - Regulatory Protein, F. Attenuator - Related to RNA molecule (it is neither a protein, DNA segment nor a small effector molecule), G. Inhibitor - Small Effector Molecule.

Step by step solution

01

Identify the term 'Repressor'

A repressor is a type of regulatory protein. It binds to the operator site on the DNA and prevents transcription from occurring.
02

Identify the term 'Inducer'

An inducer is a type of small effector molecule. It interacts with the repressor protein to prevent it from binding to the operator and thus allows transcription to proceed.
03

Identify the term 'Operator site'

The Operator site is a segment of DNA. It is the specific region where the repressor protein can bind and block transcription.
04

Identify the term 'Corepressor'

A corepressor is a type of small effector molecule. It binds to the repressor and enables it to bind to the operator and stop transcription
05

Identify the term 'Activator'

An Activator is a regulatory protein that increases transcription of a gene or set of genes.
06

Identify the term 'Attenuator'

An attenuator is a regulatory segment of an mRNA molecule. This mechanism is typically found in prokaryotes.
07

Identify the term 'Inhibitor'

An inhibitor is a type of small effector molecule. It can bind to a protein such as an enzyme and prevent it from functioning.

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