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M9 beta-glucosidase plates redone; glycerol stock OD600 check

Wet lab Both projects Confirmed

Contributors: Tank

M9 plates redone

Remade the M9 beta-glucosidase-transformant plates (3 plates per condition, 50 mL agar mix each: 12.5 mL 4X M9 + agar-water base + condition-specific additions + 40 µg/mL chloramphenicol):

  • 1% cellobiose
  • 0.4% glucose
  • 1% cellobiose + 0.4% glucose

50 µl of overnight culture (from glycerol stock) was spread on each plate undiluted. The agar-water mix looked yellowish after microwaving (likely localised overheating), but plates set normally. The combined-condition plates had to be remade after solidifying prematurely during the water-bath melt step.

Glycerol stock OD600

Recovered LB culture OD600 = 1.574 (blanked against LB):

SampleReading
Undiluted1.160
1:1 dilution0.787 → ×2 = 1.574