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Purifying Plasmid DNA från kolonier Använda Qiagen Miniprep Kit

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

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Cite this Article: Purifying Plasmid DNA från kolonier Använda Qiagen Miniprep Kit

Zhang, S., Cahalan, M. D. Purifying Plasmid DNA from Bacterial Colonies Using the Qiagen Miniprep Kit. J. Vis. Exp. (6), e247, doi:10.3791/247 (2007).

Abstract: Purifying Plasmid DNA från kolonier Använda Qiagen Miniprep Kit

Plasmid DNA-rening från E. coli är en central teknik för molekylär kloning. Småskalig rening (miniprep) från mindre än 5 ml bakteriekultur är ett snabbt sätt för klon verifiering eller isolering av DNA, följt av ytterligare enzymatiska reaktioner (polymeraskedjereaktion och restriktionsenzymanalys matsmältningen). Här har vi video-inspelade de allmänna förfarandena i miniprep genom QIAGEN är QIAprep 8 Miniprep Kit, som syftar till att införa detta mycket effektiv teknik för att den allmänna nybörjare för molekylärbiologisk teknik. Hela proceduren är baserad på alkalisk lys av E. coli-celler följt av adsorption av DNA på kisel i närvaro av höga salt. Den består av tre steg: 1) förberedelse och clearing av en bakteriell lysat, 2) adsorption av DNA på QIAprep membran, 3) tvättning och eluering av plasmid-DNA. Alla steg utförs utan användning av fenol, kloroform, CsCl, etidiumbromid och utan alkohol nederbörd. Det tar vanligtvis mindre än 2 timmar att slutföra hela förfarandet.

Disclosures: Purifying Plasmid DNA från kolonier Använda Qiagen Miniprep Kit

Ask the Author: Purifying Plasmid DNA från kolonier Använda Qiagen Miniprep Kit

5 Comments

A very helpful and clear demonstration. Thanks!

1

Reply

Posted by: AnonymousJanuary 22, 2008, 9:33 PM

With this kit is it best to do an alcohol precipitation after or unnecessary?

 

Thank you

2

Reply

Posted by: sjNovember 4, 2008, 7:26 AM

 

Hello from QIAGEN,

There is no need to do an alcohol precipitation after this procedure - the DNA is ready to use as eluted from the QIAprep column.

You can see the handbook for this kit online here if you would like:

 

 

http://www1.qiagen.com/literature/handbooks/literature.aspx?id=1000248

-QIAGEN Technical Service

 

 

http://www1.qiagen.com/Contact/QIAGENWorldWide.aspx

2.1

Reply

Posted by: QIAGEN Technical ServiceNovember 4, 2008, 8:18 AM

By using this kit, what can I do if I'd like to increase the yield of plasmid with a low copy number? What is the maximum volume of culture that can be harvested?
Thank you very much.

3

Reply

Posted by: Soon Keat O.July 18, 2009, 10:51 AM

Your demonstration is very good but you didn't mentioned the volumes of buffer added and the speed and time of centrifuge

4

Reply

Posted by: idrissaMarch 2, 2010, 10:40 AM

Thanks for doing that video. There's not a lot of theory in there, but it is surely helpful for beginners. I'm holding onto it for future coworkers.

5

Reply

Posted by: privateMarch 23, 2010, 5:02 AM

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