The Journal of Visualized Experiments (JoVE) is a peer reviewed, PubMed-indexed video journal. Our mission is to increase the productivity of scientific research.
Authors
The Journal of Visualized Experiments (JoVE) is a peer reviewed, PubMed-indexed video journal. Our mission is to increase the productivity of scientific research.
Department of Physiology and Biophysics, University of California, Irvine (UCI)
This article is a part of JoVE General. If you think this article would be useful for your research, please recommend JoVE to your institution's librarian.
Recommend JoVE to Your LibrarianCurrent Access Through Your IP Address
You do not have access to any JoVE content through your current IP address.
IP: 23.22.252.150, User IP: 23.22.252.150, User IP Hex: 387382422
Current Access Through Your Registered Email Address
You aren't signed into JoVE. If your institution subscribes to JoVE, please sign in or create an account with your institutional email address to access this content.
Froger, A., Hall, J. E. Transformation of Plasmid DNA into E. coli Using the Heat Shock Method. J. Vis. Exp. (6), e253, doi:10.3791/253 (2007).
Transformation of plasmid DNA into E. coli using the heat shock method is a basic technique of molecular biology. It consists of inserting a foreign plasmid or ligation product into bacteria. This video protocol describes the traditional method of transformation using commercially available chemically competent bacteria from Genlantis. After a short incubation in ice, a mixture of chemically competent bacteria and DNA is placed at 42°C for 45 seconds (heat shock) and then placed back in ice. SOC media is added and the transformed cells are incubated at 37°C for 30 min with agitation. To be assured of isolating colonies irrespective of transformation efficiency, two quantities of transformed bacteria are plated. This traditional protocol can be used successfully to transform most commercially available competent bacteria. The turbocells from Genlantis can also be used in a novel 3-minute transformation protocol, described in the instruction manual.
1
ReplyPosted by: AnonymousFebruary 1, 2008, 7:57 PM