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DNA Assembly

Cell Culture: Bacteria

Cell Culture: Mammalian


Real Time Quantitative PCR

Resources at OpenWetWare

  • E. coli Strains
  • Materials: buffer formulas; specific information on commonly used reagents (e.g., LB broth, ampicillin, restriction enzymes, etc.)

Software Guides


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Bromo-Blue/X-cyanol Loading Buffer, 20X

Formula: [60% glycerol; 12.5 mg/mL bromophenol blue; 12.5 mg/mL xylene cyanol]
Volume: 20 mL

  • 100% glycerol, 12 mL
  • Bromophenol blue, 250 mg
  • Xylene cyanol, 250 mg

Start with 18 mL dH2O. Add in glycerol 6 mL at a time and mix by pipetting up and down several times (it is very viscous). Add dyes.

Chromatin Prep Buffer A

Formula: [10 mM HEPES (pH 7.9); 10 mM KCl, 1.5 mM MgCl2; 0.34 M sucrose; 10% glycerol; 1 mM dithiothreitol; 1x protease inhibitor cocktail]
Volume: 100 mL

  • 1 M HEPES pH 7.9, 1 mL
  • 1 M KCl, 1 mL
  • 1 M MgCl2, 150 μL
  • Sucrose, 11.6 g
  • 50% Glycerol, 20 mL
  • 1 M Dithiotreitol (DTT), 100 μL

Bring up to total volume with dH2O. Store at 4°C. Add 100x protease inhibitor cocktail* (1:100) immediately before use.

DNA Ladder mix, Gene Ruler 1 kb Plus

Formula: [0.5 ng/ 10 μL Fermentas Gene Ruler 1 kb Plus; 1x loading dye]
Volume: 1000 μL

  • Gene Ruler plus (0.5 ng/μL), 100 μL
  • 20x loading dye, 50 μL
  • dH2O, 850 μL

Add dH2O directly to the supplier's tube (containing 100 μL of ladder). Add the 20x loading dye. Mix. Aliquot 200 μL portions into five 1.5 mL tubes. Store at -20°C.

LB Broth (Lennox)

Volume: 1 L

  • Caesin tryptone, 10 g
  • Yeast extract, 5 g
  • NaCl, 5 g
  • 1 N NaOH, 1 mL

Dissolve in 1000 mL dH2O. Autoclave to sterilize. Cool to room temperature before adding antibiotics. Shortcut: Use 25 g Acros LB Broth, Lennox (BP9722-500) granules instead of caesin tryptone, yeast extract, and NaCl.

Mammalian Cell Media

Volume: 500 mL

Add FBS and pen-strep directly to the incomplete medium in the original stock bottle. Cap and invert to mix. Filter sterilize using a vacuum filtration unit.