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Protocols and Applications Guide (US Letter Size) - Promega

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||||||||| 9DNA Purification<br />

3. Apply vacuum to pull liquid through Minicolumn.<br />

Release vacuum when all liquid has passed through<br />

Minicolumn.<br />

Washing<br />

4. Add 700µl of Membrane Wash Solution (ethanol<br />

added). Apply a vacuum to pull solution through<br />

Minicolumn.<br />

5. Turn off vacuum <strong>and</strong> repeat Step 4 with 500µl of<br />

Membrane Wash Solution. Apply a vacuum to pull<br />

solution through Minicolumn.<br />

6. Transfer Minicolumn to a Collection Tube. Centrifuge<br />

at 16,000 × g for 5 minutes.<br />

7. Empty the Collection Tube <strong>and</strong> recentrifuge the column<br />

assembly for 1 minute with the microcentrifuge lid open<br />

(or off) to allow evaporation of any residual ethanol.<br />

Elution<br />

8. Carefully transfer Minicolumn to a clean 1.5ml<br />

microcentrifuge tube.<br />

9. Add 50µl of Nuclease-Free Water to the Minicolumn.<br />

Incubate at room temperature for 1 minute. Centrifuge<br />

at 16,000 × g for 1 minute.<br />

10. Discard Minicolumn <strong>and</strong> store DNA at 4°C or –20°C.<br />

XI. Composition of Solutions<br />

LB (Luria-Bertani) medium (1 liter)<br />

10g Bacto®-tryptone<br />

5g Bacto®-yeast extract<br />

5g NaCl<br />

Adjust pH to 7.5 with NaOH. Autoclave.<br />

LB-Miller medium (1 liter)<br />

10g Bacto®-tryptone<br />

5g Bacto®-yeast extract<br />

10g NaCl<br />

Adjust pH to 7.0 with NaOH. Autoclave.<br />

Membrane Wash Solution<br />

(Wizard® SV Gel <strong>and</strong> PCR Clean-Up System)<br />

10mM potassium acetate (pH 5.0)<br />

80% ethanol (after ethanol addition)<br />

16.7µM EDTA (pH 8.0)<br />

To prepare this solution, add 95% ethanol to the supplied<br />

Membrane Wash Solution (concentrated) as described in<br />

Table 9.11 in the Fragment/PCR Product Purification<br />

protocol section.<br />

<strong>Protocols</strong> & <strong>Applications</strong> <strong>Guide</strong><br />

www.promega.com<br />

rev. 3/09<br />

Membrane Binding Solution<br />

(Wizard® SV Gel <strong>and</strong> PCR Clean-Up System)<br />

4.5M guanidine isothiocyanate<br />

0.5M potassium acetate (pH 5.0)<br />

1X TE buffer<br />

10mM Tris-HCl (pH 7.5)<br />

1mM EDTA (pH 8.0)<br />

1X TBE buffer<br />

89mM Tris base<br />

89mM boric acid<br />

2mM EDTA (pH 8.0)<br />

1X TAE buffer<br />

40mM Tris base<br />

5mM sodium acetate<br />

1mM EDTA (pH 8.0)<br />

Terrific Broth (1 liter)<br />

12g Bacto®-tryptone<br />

24g Bacto®-yeast extract<br />

4ml glycerol<br />

Add components to 900ml deionized water. Autoclave <strong>and</strong><br />

allow solution to cool to ~60°C. Add 100ml of a sterile<br />

solution of 0.17M KH2PO4, 0.72M K2HPO4 <strong>and</strong> mix to<br />

disperse evenly.<br />

0.17M KH2PO4, 0.72M K2HPO4 sterile solution<br />

2.31g KH2PO4<br />

12.54g K2HPO4<br />

Dissolve in 90ml deionized water. Adjust volume to 100ml<br />

<strong>and</strong> sterilize by autoclaving.<br />

YPD broth (1 liter)<br />

10g yeast extract<br />

20g peptone<br />

20g dextrose<br />

Autoclave. Final pH 6.5±0.2 at 25°C.<br />

2X YT medium (1 liter)<br />

16g Bacto®-tryptone<br />

10g Bacto®-yeast extract<br />

5g NaCl<br />

Adjust pH to 7.0 with NaOH. Autoclave.<br />

XII.References<br />

Adams, D.S. (2003) In: Lab Math: A H<strong>and</strong>book of Measurements,<br />

Calculations, <strong>and</strong> Other Quantitative Skills for Use at the Bench Chapter<br />

5, Cold Spring Harbor Laboratory Press, NY, 127–45.<br />

Ahmed, A. et al. (2003) Madurella mycetomatis strains from<br />

mycetoma lesions in Sudanese patients are clonal. J. Clin. Microbiol.<br />

41, 4537–41.<br />

Ausubel, F.M. et al. (1989) Current <strong>Protocols</strong> in Molecular Biology,<br />

Vol. 2, John Wiley <strong>and</strong> Sons, NY.<br />

Birnboim, H.C. (1983) A rapid alkaline extraction method for the<br />

isolation of plasmid DNA. Methods Enzymol. 100, 243–55.<br />

Birnboim, H.C. <strong>and</strong> Doly, J. (1979) A rapid alkaline extraction<br />

procedure for screening recombinant plasmid DNA. Nucl. Acids<br />

Res. 7, 1513–23.<br />

PROTOCOLS & APPLICATIONS GUIDE 9-35

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