Question
In: Biology
A newly identified bacterial strain needs nedine as a growth factor. To synthesize nedine these bacteria...
- A newly identified bacterial strain needs nedine as a growth factor. To synthesize nedine these bacteria use three enzymes that are encoded by the genes nedA, nedB and nedC in the ned operon. The expression of these three genes is controlled by a regulatory protein NedR. Nedine binds to NedR, and it changes the ability of NedlR to bind to the regulatory region of the ned operon.
The ned genes are expressed only in the absence of nedine. The regulator NedR, only when bound to nedine, can bind at the regulatory region of the ned operon.
Answer all questions
- Draw the ned operon showing structural and regulatory genes, the regulatory region including the promoter and terminator. Describe the role of each term in your drawing.
- Show the regulation model of the ned operon in the absence of nedine. In your figures, include structural genes, regulatory region, NedR, transcription and translation. Describe the process how gene expression is turned ON or OFF in the absence of nedine.
- Show the regulation model of the ned operon in the presence of nedine. In your figures, include structural genes, regulatory region, NedR, nedine, transcription and translation. Describe the process of how gene expression is turned ON or OFF in the presence of nedine.
Solutions
gladiator answered 1 year agoRelated Solutions
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The mel genes are expressed
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A newly identified bacterial strain needs melrose as a growth factor. To synthesize melrose these bacteria...
A newly identified bacterial strain needs melrose as a growth
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are encoded by the genes melA, melB and melC in the mel operon. The
expression of these three genes is controlled by a regulatory
protein MelR. Melrose binds to MelR, and it changes the ability of
MelR to bind to the regulatory region of the mel operon. The mel
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Q3 A newly identified bacterial strain needs nedine as a growth factor. To synthesize nedine these...
Q3 A newly identified bacterial strain needs nedine as a growth
factor. To synthesize nedine these bacteria use three enzymes that
are encoded by the genes nedA, nedB and nedC in the ned operon. The
expression of these three genes is controlled by a regulatory
protein NedR. Nedine binds to NedR, and it changes the ability of
NedlR to bind to the regulatory region of the ned operon. The ned
genes are expressed only in the absence of nedine. The...
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