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Media and buffers recipes

Miniprep buffers
  • P1 (resuspension buffer)
  • P2 (lysis buffer)
  • N3 (neutralization buffer)
  • P3 (neutralization buffer)
  • PB (PCR cleanup or EnoA+ removal)
  • PE (wash buffer)
  • QG (gel extraction)
  • Terific Broth (TB)
  • YPAD
  • Drop-out media
  • 10X HBS
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Terific Broth (TB)

For 1 L of media:

  • 47.6 TB mix
  • 4 ml glycerol

Add water to 1 L and autoclave at 121°C for 15–20 minutes.

After autoclave add:

  • 0.1% - 1% glucose
  • 10 mM MgSO4
  • antibiotics
YPAD

For 1 L of media:

  • 10 gr Yeast extract
  • 20 gr Peptone
  • 80 mg Adenine sulfate
  • 20 gr Dextrose (Glucose)

For plates add:

  • 20 gr Agar
yeast drop-out media

For 1 L of media:

  • 1.92 gr drop-out mix
  • 6.7 gr yeast nitrogen base w/o AA
  • 20 gr carbohydrate (glucose/galactose)

For plates add:

  • 20 gr Agar
P1 (resuspension buffer)

Keep refrigirated
Shake well before using

  • 50 mM Tris-HCl pH 8.0
  • 10 mM EDTA
  • 100 µg/ml RNase A
  • 43 µg/ml Thymophthalein (blue pH indicator)

1000X Blue pH indicator dye:
43 mg/ml Thymophthalein in 100% ethanol

P2 (lysis buffer)
  • 200 mM NaOH
  • 1% SDS
N3 (neutralization buffer)

Neutralization buffer for spin columns

  • 4.2M guanidine hydrochloride (GuHCl)
  • 0.9M potassium acetate pH 4.8
P3 (neutralization buffer)

Neutralization buffer for bacmid purification, midi, maxi, giga preps
Do not use with spin columns!

  • 3.0 M potassium acetate pH 5.5
PB buffer

extra wash step for EndA+ removal or PCR purification

  • 5M guanidine hydrochloride (Gu-HCL)
  • 30% isopropanol
QG (gel extraction buffer)
  • 5.5 M guanidine thiocyanate (GuSCN)
  • 20 mM Tris-HCl, pH 6.6 (25ºC)
PE (wash buffer)
  • 80% ethanol
  • 10mM Tris-HCl pH 7.5 (25ºC)
10X HEPES buffered saline (HBS)
  • 200 mM HEPES pH 7.5
  • 1.5 M NaCl
Alon lab, SHM-B323, 333 Cedar St., New Haven, CT 06510
Department of Pharmacology Yale School of Medicine
© Assaf Alon 2024