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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- What 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_forwardUse the figure to explain the formation of patch recombination heteroduplexes and splice recombination heterduplexes, respectively ?arrow_forwardnon-coding DNAs can be put into two groups, name themarrow_forward
- What is recombination? Mention its applications with reference to genetic engineering.arrow_forwardPlease answer What is a RNA-DNA hybrid? State two situations in the Central Dogma when an RNA-DNA hybrid is formed.arrow_forwardYou have used the technique of chromatin immunoprecipitation to isolate DNA fragments containing a DNA-binding protein of interest. Suppose that you wish to know whether a particular known DNA fragment is present in the isolated mixture. How might you detect its presence?arrow_forward
- Draw a genetic diagram & suitable symbolsarrow_forwardMatch the following Conjugation terms with the most appropriate description in the image: F- recombinant F- strain F+ strain HFR strainarrow_forwardConsider the following wild-type and mutant sequences:Wild-type ....CTTGCAAGCGAATC....Mutant ....CTTGCTAGCGAATC....arrow_forward
- Following method is used to study long-range chromosome interactions Digestion by restriction endonuclease Northern Blot Chromatin Immunoprecipitation Chromosome conformation capture assaysarrow_forwardIn E. coli, the genes for histidine (his), arginine (arg), tyrosine (tyr), and valine (val) synthesis are closely linked. A wild-type strain is used as a donor for transducing viruses. Various recipient strains were treated with these viruses. Wild-type recombinant colonies were then counted, with the results shown in the following table. Genotype of recipient Number of wild-type colonies Genotype of recipient Number of wild-type colonies his- arg+ val+ tyr+ 254 his+ arg- val- tyr+ 132 his+ arg+ val- tyr- 36 his+ arg- val+ tyr+ 240 his- arg- val+ tyr+ 28 his- arg+ val- tyr+ 102 his- arg+ val+ tyr- 100 his+ arg- val+ tyr- 2 What is the cotransduction coefficient of histidine and valine? For consistency, standardize on histidine. 0.38 (wrong) 0.537 0.402 None of thesearrow_forwardNote: the top strand having 5' at the left and 3' at the right is not a mistakearrow_forward
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