General Zamanian Lab Recipes
Ampicillin Stock (100 mg/mL)
- Mix 2 g of ampicillin powder (Fisher AC611770250) into 20 mL of MilliQ H2O
- Vortex until the ampicillin is dissolved
- Sterilize using a 50 mL syringe filter into a 50 mL conical tube
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Aliquot 1 mL of the ampicillin solution into labeled 1.5 mL tubes and store at -20°C
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Note: Filtering and aliquoting should be performed using sterile techniques in the hood
Kanamycin Stock (50 mg/mL)
- Mix 500 mg of kanamycin powder (Fisher AC450810100) into 9 mL of MilliQ H2O
- Vortex until kanamycin is dissolved
- Aliquot 1 mL of the kanamycin solution into labeled 1.5 mL tubes and store at -20°C
LB Miller Broth
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Mix the following:
Reagent Amount Tryptone 10 g Yeast extract 5 g NaCl 10 g dH2O up to 1 L -
Autoclave on liquid cycle for 30 min
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Add antibiotics after media has cooled (if needed):
Antibiotic Stock Dilution Final Volume (for 500 mL media) Ampicillin 100 mg/mL 1:1000 100 μg/mL 0.5 mL Kanamycin 50 mg/mL 1:1000 50 μg/mL 0.5 mL Chloramphenicol 50 mg/mL 1:3333 15 μg/mL 0.15 mL -
Store media with antibiotics at 4°C
LB Miller Agar
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Mix the following:
Reagent Amount Tryptone 10 g Yeast extract 5 g Bacto Agar 15 g NaCl 10 g dH2O up to 1 L -
Autoclave on liquid cycle for 30 min
- Place media in a 55°C waterbath for 1 hr
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Once cooled, pour media or add antibiotics
Antibiotic Stock Final Volume (for 500 mL media) Ampicillin 100 mg/mL 100 μg/mL 0.5 mL Kanamycin 50 mg/mL 50 μg/mL 0.5 mL Chloramphenicol 50 mg/mL 15 μg/mL 0.15 mL -
Mix well after adding antiobiotic and then pour
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Optional: If needed for blue/white screening, add X-Gal and IPTG:
Antibiotic Stock Final Volume (for 500 mL media) X-Gal (reconstituted in DMSO) 50 mg/mL 200 μg/mL 2 mL IPTG (reconstituted in Water) 100 mM 1 mM 5 mL -
Store plates at 4°C
50X TAE
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Mix the following:
Reagent Amount Tris Base 242 g EDTA (0.5 M pH 8) 100 mL Glacial Acetic Acid 57.1 mL dH2O up to 1 L -
Be very careful when pipetting the glacial acetic acid, as it is very caustic.
- Use a GLASS pipette
EDTA 0.5 M (for 50X TAE, TE Buffer)
Reagent | Amount |
---|---|
EDTA, disodium salt | 93 g |
NaOH pellets | ~ 10 g |
dH2O | up to 500 mL |
- Add EDTA powder to ~450 mL of dH2O while stirring and monitoring pH
- Slowly add the NaOH pellets until pH = 8
- Bring the volume up to 500 mL
- Filter sterilize
TRIS 1M pH 8 (for 50x TAE, TE Buffer)
Reagent | Amount |
---|---|
Tris Base | 121.14 g |
HCl | ~ 80-85 mL |
dH2O | up to 1 L |
- Dissolve Tris Base in 800 mL dH2O, while monitoring pH.
- Slowly add HCl until pH = 8
- Bring final volume to 1 L
- Aliquot 200 mL into 250 mL bottles
- Autoclave on liquid cycle for 30 minutes
TE Buffer
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Mix the following:
Reagent Amount (500 mL total) Amount (200 mL total) 1M Tris (pH 8) 5 mL 2 mL 0.5M EDTA (pH 8) 5 mL 2 mL dH2O 494 mL 197.6 mL -
Aliquot 10 mL each into 15 mL conical tubes
Orange G 6X Gel Loading Dye
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Make a 6X stock (0.9%) by adding Orange G dye to glycerol in a 15 mL conical tube and mixing completely:
Reagent Amount Orange G dye 45 mg 30% Glycerol (filter sterilized) 10.0 mL -
Aliquot 1 mL each into pre-labeled 1.7 mL tubes and store at room temperature in labeled box. Additional tubes can be stored at -20°C.
TSS Buffer (for chemically competent bacteria)
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Mix the following:
Reagent Amount PEG 8000 (or 3350) 5 g MgCl2 * 6H2O 0.3 g DMSO 2.5 mL LB Broth up to 50 mL -
Filter sterilize through 0.22 um filter
SOC (for bacterial transformations)
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Mix the following:
Reagent 1 L Stock 500 mL Stock 250 mL Stock Yeast extract 5 g 2.5 g 1.25 g Tryptone 20 g 10 g 5 g NaCl 0.584 g 0.292 g 0.146 KCl 0.186 g 0.093 g 0.0465 g MgSO4 2.4 g 1.2 g 0.6 g dH2O up to 1 L up to 500 mL up to 250 mL -
Autoclave on liquid cycle for 30 min
- Adjust pH to 7.5 prior to use (this requires ~ 25 mL of 1M NaOH per liter)
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Add filter-sterilized (0.22 um filter) 20% Glucose solution (20 g in 100 mL dH2O) after the media has cooled:
Stock Vol. 20% Glucose Amount 1 L 20 mL 500 mL 10 mL 250 mL 5 mL -
Store at room temperature or at +4°C.
1P2P (1.4% stock solution)
- Mix the following:
Reagent | Amount |
---|---|
93% 1P2P stock | 15 ml |
M9 | 985 ml |
- Be sure to mix well when making stock and before each use
- Store at room temperature