(Ampicillin Sodium Salt; ampicillin sodium; amblosin; plumericin; viacilina-A)
Molecular Biology Grade, Cell Cuture Tested
Ampicillin is an inhibitor of bacterial cell wall synthesis that acts by disrupting the crosslinking of peptidoglycan. Specifically, ampicillin functions by binding and in turn deactiviting transpeptidases. High activity against gram negative bacteria.
Often used to select for a desired gene (plasmid) by bacteria such as E. coli. A common example, is selecting against the plasmid encoding for β-Lactamase production such as pBR322 or pUC (Ampr). Amplicillin soluble in water and should be stored between 2-8 °C.
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For 1x stock solution, use 100 μg/mL. For 1000x stock solution, use 100 dissolved in water. However, 70% ethanol can be added to the solution so that the Ampicillin solution does not freeze at 20 °C. Note: Do not use 100% ethanol; the Ampicillin will not dissolve.
This protocal will yeild a final concentration of 50 μg/ml of Ampicillin
|Agar (plates only)||
a. Liquid Media: Tighten cap and store at room temperature until use, add 0.050 g of ampicillin until dissolved. Pour plates in a laminar-flow hood. Store at 4 °C in the dark, inverted, up to 3 months.
*If bubbles are present in plates a flame from a Bunsen burner can be briefly passed over the plates. Be sure to keep flame moving while removing bubbles, too much heat can destroy the Ampicillin. 1 L of LB media will make ~30 plates, if you are looking to save some time then our selection of premade E. coli plates maybe of interest.
b. Agar Plates: Add 0.050 g of Ampicillin and stir
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