The ability of a mutant of streptococcus lacking ComD to transform DNA. Introduction: Transformation is the process of introduction or transfer of DNA (deoxyribonucleic acid) into the bacterial cell from the outside environment. There are various methods for the transformation of DNA in a particular cell. The transformasome proteins are also associated with the transformation of DNA. To utilize the DNA, the cell has to activate the competent factor (CF) which binds to the ComD and enters into the cell. The Com is the sensory protein present in the cell membrane.

Question

Want to see the full answer?

Answer 1

Question

Chapter 9.1, Problem 1TQ

Summary Introduction

To review:

The ability of a mutant of streptococcus lacking ComD to transform DNA.

Introduction:

Transformation is the process of introduction or transfer of DNA (deoxyribonucleic acid) into the bacterial cell from the outside environment. There are various methods for the transformation of DNA in a particular cell. The transformasome proteins are also associated with the transformation of DNA. To utilize the DNA, the cell has to activate the competent factor (CF) which binds to the ComD and enters into the cell. The Com is the sensory protein present in the cell membrane.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Bacterial conjugation has medical consequences. For example, certain plasmids contain genes that code for toxins. The causative agent of a deadly form of food poisoning, E. coli 0157, synthesizes a toxin that causes massive bloody diarrhea and kidney failure. This toxin is now believed to have originated in Shigella, another bacterium that causes dysentery. Similarly, the growing problem of antibiotic resistance is partly attributable to the spread of antibioticresistant genes among bacterial populations. Antibiotic resistance develops because antibiotics are overused in medical practice and in livestock feeds. Suggest a mechanism by which this extensive use promotes antibiotic resistance.

when various strains of lambda phage are seeded on a lawn of e.coli, they can form clear or turbid plaques. Explain the difference between the two types of plaques. can all bacteriophage form clear and turbid plaques?

In Hershey-Chase experiment, bacteriophages protein coats were tagged with radioactive isotope S-32. These phages were used to infect E. coli cells and the cells were further centrifuged to form pellets. Why was the radioactivity level of S-32 found greater outside the cells compared to the E. coli cell pellets? Explain briefly. If the experiment is repeated in the same manner but this time the phage protein coats are labelled with isotope X and the phage DNA with isotope Y, which isotope’s radioactivity will be found in greater amounts in the E. coli cell pellets after centrifugation? Explain briefly.