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Bacteriology 17 Views 1 Answers

Sourav PanLv 9December 7, 2024

What is the purpose of CaCl₂ in bacterial transformation?

What is the purpose of CaCl₂ in bacterial transformation?

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Sourav PanLv 9May 15, 2025

Calcium chloride is used to make bacterial cells competent for DNA uptake by destabilizing the cell membrane. The calcium ions neutralize the negative charges on both the bacterial cell membrane and the DNA, reducing repulsion and facilitating binding. The treatment also makes the membrane more permeable, enabling DNA to enter the cells during the heat shock step.

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