Prescott's Microbiology
11th Edition
ISBN: 9781260211887
Author: WILLEY, Sandman, Wood
Publisher: McGraw Hill
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Chapter 17.4, Problem 3CC
Summary Introduction
The recombinant proteins are purified by a common method called polyhistidine tagging or His-tagging. This process involves the addition of a series of histidine residues either to the C- or N- terminus of the protein. The amino acid Histidine is used for tagging because it has a high affinity for the metal ions. Proteins having multiple residues of histidine will preferentially bind to a solid phase material called resin which has exposed to cobalt or nickel atom. This allows the separation of His-tagged proteins from the other cellular constituents.
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Chapter 17 Solutions
Prescott's Microbiology
Ch. 17.1 - Examine the uncut piece of DNA shown in the upper...Ch. 17.1 - Which of the above enzymes yield blunt ends? Which...Ch. 17.1 - Prob. 3MICh. 17.1 - What would you conclude if you obtained only blue...Ch. 17.1 - Why must introns be removed from eukaryotic DNA...Ch. 17.1 - Which plasmid is a shuttle vector? Why?Ch. 17.1 - In what ways does the BAC shown here differ from...Ch. 17.1 - Describe restriction enzymes, sticky ends, and...Ch. 17.1 - What is cDNA? Why is it necessary to generate cDNA...Ch. 17.1 - Prob. 3CC
Ch. 17.1 - Prob. 4CCCh. 17.1 - Prob. 5CCCh. 17.2 - Why, after three cycles, are the vast majority of...Ch. 17.2 - Briefly describe the polymerase chain reaction....Ch. 17.2 - Why is PCR used to detect infectious agents that...Ch. 17.2 - How would you use PCR to measure the concentration...Ch. 17.2 - Why is it possible to visualize a PCR product on...Ch. 17.2 - Prob. 5CCCh. 17.3 - Why are long fragments (e.g., 20,000 bp) of...Ch. 17.4 - What special considerations are necessary if one...Ch. 17.4 - Prob. 1CCCh. 17.4 - Prob. 2CCCh. 17.4 - Prob. 3CCCh. 17.4 - You are studying chemotaxis proteins in a newly...Ch. 17.5 - Prob. 1MICh. 17.5 - Prob. 1CCCh. 17.5 - Prob. 2CCCh. 17 - Which of the DNA molecules shown are recombinant?Ch. 17 - Prob. 1RCCh. 17 - Prob. 2RCCh. 17 - Prob. 3RCCh. 17 - Prob. 4RCCh. 17 - Prob. 5RCCh. 17 - Prob. 6RCCh. 17 - Prob. 1ALCh. 17 - Prob. 2ALCh. 17 - Suppose you transformed a plasmid vector carrying...Ch. 17 - You are interested in the activity and regulation...Ch. 17 - Prob. 5ALCh. 17 - Prob. 6ALCh. 17 - Prob. 7AL
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- For the following sequence please design an 18 base pair forward primer. ATG TCA AAA GCT GTC GGT ATT GAT TTA GGT ACA ACA TAC TCG TGT GTT GCT CAC TTT GCT TAAarrow_forwardon a gene in a microorganism that provides a characteristic you find interesting. However, I want it to be a gene that is beneficial for the microbial cell, but allows for a negative impact related to the human. For example, some strains of Staphylococcus aureus have a gene, mecA, that makes them resistant to the antibiotic methicillin. They are commonly called methicillin-resistant S. aureus or MRSA. The gene is beneficial to the bacteria because it allows for their survival even in the presence of this antibiotic but is negative for humans because it limits what antibiotics can be used for treatment. There are a large range of options here including microbe structures as well as the production of various substances so don’t limit your search. Have fun, this will be a link from the recipe found in the DNA of a microorganism to a characteristic that will cause us harm.arrow_forwardThe presence (+) or absence (−) of six sequences in each of five bacterial artificial chromosome (BAC) clones (A–E) is indicated in the following table. Using these markers, put the BAC clones in their correct order and indicate the locations of the numbered sequences within them.arrow_forward
- non-coding DNAs can be put into two groups, name themarrow_forwardA recombinant protein corresponding to 52 repeats of the peptide sequence YSPTSPS was covalently linked to agarose beads to make an affinity column. The beads were incubated with a nuclear extract and the protein:beads became phosphorylated. More nuclear extract was run over the column repeatedly and then the beads were washed extensively. The bound proteins were eluted from the column and when they were separated on a SDS-PAGE gel many bands appeared. What cellular process(es) might these proteins be involved in? Options: splicing polyadenylation DNA replication a and b only a, b and carrow_forwardI believe the answer would be A and D, but I am not sure because the recombinant proteins are significant only in the last to lanes. As the first lane is an empty vector. I appreciate your help.arrow_forward
- Match the following Conjugation terms with the most appropriate description in the image: F- recombinant F- strain F+ strain HFR strainarrow_forwardIn a cotransformation experiment (see question 4 of More GeneticTIPS), DNA was isolated from a donor strain that was proA+ andstrC+ and sensitive to tetracycline. (The proA and strC genes conferthe ability to synthesize proline and confer streptomycin resistance,respectively.) A recipient strain is proA− and strC− and isresistant to tetracycline. After transformation, the bacteria werefirst streaked on a medium containing proline, streptomycin, andtetracycline. Colonies were then restreaked on a medium containingstreptomycin and tetracycline. (Note: Each type of medium hadcarbon and nitrogen sources for growth.) The following resultswere obtained:70 colonies grew on the medium containing proline, streptomycin,and tetracycline, but only 2 of these 70 colonies grew whenrestreaked on the medium containing streptomycin and tetracyclinebut lacking proline. If we assume the average size of the DNA fragments is 2 minutes,how far apart are these two genes?arrow_forwardDraw a hairpin structure like that shown in Figure 18.5 for the repeated sequence found in fragile-X syndrome (see Table 18.1).arrow_forward
- The following image depicts a short stretch of sequence associated with a gene. Which of the following is true?arrow_forwardFor tailed POCR primers the “tails" can have sequence that is NOT complementary to the target sequence. True Falsearrow_forwardWhat is a recombinant vector? How is a recombinant vector constructed? Explain how X-Gal is used in a method of identifying recombinant vectors that contain segments of chromosomal DNA.arrow_forward
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