DNA提取纯化试剂

Plasmid Quickpreps

  1. growupsinglecolonyin1.5mlLB/antibioticovn@37°C
  2. pourintotube,spinfor30sec
  3. decantsupernatantandresUSPendpelletin100mllysissolution
  4. add200mlalkalineSDS,vortexwell
  5. incubatefor5minonice
  6. add150mlhighsaltsolution,vortexwell
  7. incubateforca.10minonice
  8. spinfor10min
  9. remove400mlsupernatantandtransfertonewtubeprefilledwith400mlisopropanole
  10. vortexwellandkeeptubeonicefor10min
  11. spinfor10min
  12. washpelletwith70%EtOH
  13. vacuumdrypelletfor5minandtakeupin100ml1xTE/20mg/mlRNAseA
  14. usually1-2mlisenoughfordigest(high-copyplasmid),keepDNAfrozenat-20°C
  15. phenolizeimportantprepsiftobekeptforalongerperiodoftime(morethan4-6months)

Solutions:

lysissolution:(freshlyprepared)

7.55mlH2O2ml50%glucose0.2ml0.5MEDTA0.25ml1MTris-HClpH8------10mltotal

alkalineSDS:(stablefor1week)

7.6mlH2O2ml5%SDS0.4ml5NNaOH------10mltotal

hightsaltsolution:

3MNaOAcpH5.2(samesolutionasusedinprecipitatingDNA)

Remarks:

Evenifkeptat-20°CDNAfromthisqualitywilldegradeoveraperiodofayearorsowhennotphenolizedcarefully(ca.3x)!Takecarethatnointerphaseremains.

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