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ヒートショック法による大腸菌へのプラスミドDNAの形質転換

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Department of Physiology and Biophysics, University of California, Irvine (UCI)

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Cite this Article: ヒートショック法による大腸菌へのプラスミドDNAの形質転換

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).

Abstract: ヒートショック法による大腸菌へのプラスミドDNAの形質転換

ヒートショック法を用いて大腸菌へのプラスミドDNAの形質転換は、分子生物学の基本的なテクニックです。それは、細菌への外来プラスミドやライゲーション製品を挿入することで構成されています。このビデオプロトコルはGenlantisから市販のケミカルコンピテント細菌を使用した変換の伝統的な方法を説明します。氷の短いインキュベーションの後、ケミカルコンピテントバクテリアとDNAの混合物を45秒間、42 ° Cに配置されています(熱ショック)し、氷中に戻し入れ。 SOC培地を添加し、形質転換細胞を℃で30分間攪拌しながら37℃でインキュベートする。形質転換効率に関係なく、コロニーを単離することが保証されるためには、形質転換した細菌の2​​つの量は、メッキです。この伝統的なプロトコルは、ほとんどの市販のコンピテント細菌を形質転換するために正常に使用できます。 Genlantisからturbocellsは、取扱説明書に記載する新規な3分間の変換のプロトコルでも使用することができます。

Disclosures: ヒートショック法による大腸菌へのプラスミドDNAの形質転換

Ask the Author: ヒートショック法による大腸菌へのプラスミドDNAの形質転換

9 Comments

I have never seen or heard anyone use beads to create a spread plate. Is that a new technique that has not reached my university yet, or is it an outdated technique that scientists don't use anymore?

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Posted by: AnonymousFebruary 1, 2008, 7:57 PM

hi my neam isalirezababazade . iam student in unversity tehran . what do you teransfer factors F(negativ)in the e.coli?why transfe geneboth factor?

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Posted by: aliDecember 24, 2008, 9:41 AM

People use it all the time. Ask in the labs around, I am sure you will find people who use it.

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Posted by: AnonymousFebruary 1, 2008, 8:11 PM

I haven't seen it either so you're not alone.

I'm wondering if it isn't easily to use a spreader in terms of cleanup and reducing contamination? 

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Posted by: AnonymousMarch 9, 2008, 8:45 PM

Copacabana method for spreading E. coli and yeast colonies
Mark T. Worthington, Roger Qi Luo, and Jared Pelo
BioTechniques Vol. 30, No. 4: pp 738-741 (Apr 2001)

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Posted by: ozgur g.September 9, 2008, 9:04 PM

chemical dna transformation and plasmid curing of E.coli

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Posted by: ali sabahJanuary 11, 2012, 11:49 PM

why don't the flame is open? Don't you consider the contamination risk, or do you think that it is not necessary??

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Posted by: zerrinSeptember 9, 2008, 4:22 PM

Please look more carefully. The bunsen burner is clearly on and the blue flame is clearly visible in the video. It is on at all stages which are succeptible to contamination.   

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Posted by: labSeptember 16, 2008, 8:57 PM

That was indeed a great thing for the beginners in this field. Good job!

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Posted by: kamal prajapatiOctober 22, 2008, 8:11 PM

double stranded plasmid can be fntered into host

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Posted by: khemJune 10, 2010, 6:00 AM

Beads are used as well as scoops, i prefare scoops because i can be sure that everything is spread nice and equal. some technician use beads, you need to do the right motion to make it work :D

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Posted by: MuadJanuary 25, 2012, 3:59 AM

Why we are keep the mixture of competent cells and plasmid DNA at 42c for 45 minutes?

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Posted by: NagarjunaFebruary 22, 2012, 8:56 AM

45 seconds not minutes XD
Useful, more protocols should be explain like this one
thaks

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Posted by: AdrianApril 12, 2012, 7:48 PM

Where is gloves to prevent contamination?????

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Posted by: OHIONET O.May 10, 2012, 4:35 PM

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