4. Compare regulation by allosteric control, reversible covalent modification, andproteolytic activation strategies. When might one strategy be more useful than another?

Enzymes are high molecular-weight proteins that catalyse biochemical reactions. They are also called…

Answered: 4. Compare regulation by allosteric…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

4.4 fill in the blanks please
Lạc Y [ Choose ] operator [ Choose ] Lạc Z [ Choose ] operon [ Choose ] trans-acting [ Choose ] cis-acting [ Choose ] negative regulation [ Choose ] > > > > > > >
5 difference between spontaneous and induced mutations give examples for each
Which of the following is true of nuclear regulatory effects, as compared to cytosolic regulatory effects? they begin faster, they have a longer duration of effect they have a shorter duration of effect they are the same. it's not known
7. The diagram below represents the full mRNA transcribed from the trp operon under conditions of low tryptophan. Grey blocks indicate protein coding sequences. Annotate the diagram by indicating the expected positions of the elements listed below, add more detail to the diagram if required to allow you to accurately annotate it. Use only the letters A - H (e.g. "A" for structural genes). Where a label refers to a region, you must use a bracket to indicate the extent of the region in conjunction with the specific letter. A. Structural genes B. Leader peptide C. Two adjacent trp codons D. 5' UTR and 3' UTR E. Ribosome binding site F. Site of potential transcription termination from attenuation G. Regions with sequence complementarity H. Stretch of Us 5' EDC BA 3'
8:20 ■■ LTE < Spring 2024 - Senior Comprehensives (... Question 6ɔ (ividitudtory) In the Lac operon, what happens when allolactose attaches to the repressor protein? a) b) c) the repressor is induced to attach to the promoter RNA polymerase is induced to attach to the operator lactose synthesis enzymes are produced by genes Z, Y,A d) the repressor is inactivated Question 88 (Mandatory) What is the purpose of X-chromosome inactivation in mammals? a) It accomplishes dosage compensation. b) It assists in the interactions beteeen genes Tra and Dsx. c) It prevents trisomy from occurring. d) It produces the testis determination factor. Question 94 (Mandatory) Duchenne muscular dystrophy is inherited in an X- linked recessive pattern. A female is known to be heterozygous for Du muscular dystrophy XD xd
1. The table below shows partial diploid E. coli with lac operon mutations For each mutant, indicate whether expression of permease is:• None (absent)• Basal (on but low expression)• High (on and activated expression)when grown in either lactose only or glucose only media. Also indicate the cell’s overall growth phenotype (lac+ or lac-) when grown in lactose only and why you expect that phenotype (provide “why” for ONLY THREE of the mutants). ***Recall that a bacterial cell needs at least one functional copy of lacZ AND lacY expressed at high levels to producean overall growth phenotype of lac+ when grown in lactose only media. Lac Mutant CAP bindingsite Expression inlactose only Expression inglucose only Phenotype in lactose only I+ P+ O+ Z- Y+ / I- P+ O+ Z+ Y- WT Why?: Why?: Why?: Why?: Why?: I+ P+ O+ Z- Y- / I+ P- O+ Z+ Y+ WT Why?: Why?: Why?: Why?: Why?: I+ P+ O+ Z- Y+ / I+ P+ OC Z- Y+ WT Why?: Why?: Why?: Why?: Why?: IS P+ O+ Z+ Y- / I- P+ O+ Z+…
Metabolic control is crucial part of survival for all bacteria. The lactose operon is located on the bacteria chromosome and assists in maintaining homeostasis. (l) Describe how an operon regulates the expression of genes. (m) Feedback plays an important part in life helping to maintain homeostasis. Explain how both negative and positive feedback help maintain homeostasis
1. Briefly explain how the TRP operon can control the production of tryptophan. please don't make it too long but make sure to gave all the important stuff. Make sure your answer is in detailed. Thank you
2. Draw the chemical mechanism (with electron-pushing arrows) for the addition of an RNA nucleotide triphosphate to a growing mRNA transcript. Be sure to explicitly show the attacking nucleophile and the leaving group.
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 Pregulator Hexose Operon Genes operon regulator promoter operon promoter 5e. The regulatory protein that controls expression of the hexose operons is a transcriptional ACTIVTOR or REPRESSOR (circle one).
1. You are interested in the eukaryotic protein/enzyme Thiolase, which is 200 amino acids in length. Because Thiolase is only active in the peroxisome (an organelle) you know there must be a peroxisomal localization signal sequence in the protein. Sub-cellular Location Construct of GFP protein In order to be able to visualize the Thiolase protein in a cell, you create a fusion Cytosol construct with the gene for Thiolase and the GFP gene for Green Fluorescent Protein (GFP). 200 Thiolase Peroxisome GFP You also make a series of deletions in the 50 200 Peroxisome gene for Thiolase, all fused with the GFP GFP 100 200 gene. Numbers on top of the constructs GFP Peroxisome represent amino acid positions. 125 200 Cytosol GFP You express each construct in a mammalian 150 200 cell and use a microscope to visualize where the Thiolase-GFP protein gets trafficked. cytosol GEP 150 Peroxisome GFP Using the data provided, where must the peroxisomal localization signal sequence be in the Thiolase…

SEE MORE QUESTIONS

Recommended textbooks for you

Biochemistry

ISBN:

9781319114671

Author:

Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:

W. H. Freeman

Lehninger Principles of Biochemistry

Biochemistry

ISBN:

9781464126116

Author:

David L. Nelson, Michael M. Cox

Publisher:

W. H. Freeman

Fundamentals of Biochemistry: Life at the Molecul…

Biochemistry

ISBN:

9781118918401

Author:

Donald Voet, Judith G. Voet, Charlotte W. Pratt

Publisher:

WILEY

Biochemistry

ISBN:

9781319114671

Author:

Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:

W. H. Freeman

Lehninger Principles of Biochemistry

Biochemistry

ISBN:

9781464126116

Author:

David L. Nelson, Michael M. Cox

Publisher:

W. H. Freeman

Fundamentals of Biochemistry: Life at the Molecul…

Biochemistry

ISBN:

9781118918401

Author:

Donald Voet, Judith G. Voet, Charlotte W. Pratt

Publisher:

WILEY

Biochemistry

ISBN:

9781305961135

Author:

Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal

Publisher:

Cengage Learning

Biochemistry

ISBN:

9781305577206

Author:

Reginald H. Garrett, Charles M. Grisham

Publisher:

Cengage Learning

Fundamentals of General, Organic, and Biological …

Biochemistry

ISBN:

9780134015187

Author:

John E. McMurry, David S. Ballantine, Carl A. Hoeger, Virginia E. Peterson

Publisher:

PEARSON

SEE MORE TEXTBOOKS

4. Compare regulation by allosteric control, reversible covalent modification, and proteolytic activation strategies. When might one strategy be more useful than another?