Like the lac operon, the hexose operon is controlled by a separate regulatory protein under the control of its own promoter (see the schematic of the operon below). The hexose regulatory protein is sensitive to fatty acyl CoA levels. When all hexose fuel sources are depleted, the bacteria switch to lipid metabolism and fatty acyl COA levels increase. This turns expression of the hexose operon off. +1 +1 Regulatory Gene regulator Poperon Hexose Operon Genes regulator promoter operon promoter e. The regulatory protein that controls expression of the hexose operons is a transcriptional ACTIVTOR or REPRESSOR (circle one).
Like the lac operon, the hexose operon is controlled by a separate regulatory protein under the control of its own promoter (see the schematic of the operon below). The hexose regulatory protein is sensitive to fatty acyl CoA levels. When all hexose fuel sources are depleted, the bacteria switch to lipid metabolism and fatty acyl COA levels increase. This turns expression of the hexose operon off. +1 +1 Regulatory Gene regulator Poperon Hexose Operon Genes regulator promoter operon promoter e. The regulatory protein that controls expression of the hexose operons is a transcriptional ACTIVTOR or REPRESSOR (circle one).
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Question
Transcribed Image Text:g. A mutation has occurred rendering the regulatory protein unable to recognize the operator
sequence. What effect would this have on the expression of this operon? How would this impact
the energetic demands on the cell? Justify your answer.
Transcribed Image Text:Like the lac operon, the hexose operon is controlled by a separate regulatory protein under the control
of its own promoter (see the schematic of the operon below). The hexose regulatory protein is
sensitive to fatty acyl CoA levels. When all hexose fuel sources are depleted, the bacteria switch to
lipid metabolism and fatty acyl CoA levels increase. This turns expression of the hexose operon off.
+1
+1
Regulatory Gene
P
regulator
Hexose Operon Genes
operon
regulator promoter
operon promoter
e. The regulatory protein that controls expression of the hexose operons is a transcriptional
ACTIVTOR or REPRESSOR (circle one).
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