Thursday 05/09/13

9:30 A – 7:30 P, 8:30 P – 12:30 A

Literature

  • Interesting paper by Sanchez and Gore on altruists, cheating, and ecological stability in yeast
  • Clear neat article in Nature on being a scientist.

Oligo Paint probes

  • Pool O/N PCRs
  • Test gel of O/N PCRs on Ubx, AbdA, and AbdB:
    *UAB_agarose
  • AbdB has double band (~200 and ~130). Others have single bands. PCR product seems to like to run slow, ~ 200 bp (effect of proteins?) Everything is in the bouble band state?
  • start heating waterbath
  • check yesterday’s cast gel — looks okay.
  • pre-run large well 1.5mm gel
  • cast more large and small Urea PAGE gels.
  • Denaturing gel of AbdA, AbdB and Ubx has single bands.
    denature_single_band

Extracting AbdB and Ubx probes run on 5 well 1.5 mm Urea PAGE gel, ~170 uL per well

  • Where did the extra bands come from in the pre-digested gel! Why so many bands in the digested gel!
  • Cut out large and small bands
    cut_bands
  • dissolving at 37C O/N. precipitate and test if these work as probe?
  • Ordered new primers (using Brian’s secondaries) for Y,G,B and K.

New PCR, brian’s program

sample Elute 1 Re-elute 1** Re-elute 2 fresh E2
Ubx 275 315 801 223
AbdA 313 348 382 42
AbdB 174* nd 312 87

*AbdB is with my homemade binding buffer
**Eluted into discard capsule first, not into collection tube!

T7 try N

  • Run PCR of fresh AbdA, AbdB and Ubx on gel
  • lower yield using Brian’s PCR protocol than my version with shorter annealing.
  • Run second PCR with PPT and PPT control
  • 3x large column elution of 1 mL scale PCRs 800, 300, 300 ng/uL yields
  • Very low yield:
    PPT_gel
  • Looks like both PPT PCR and elutions basically failed. The first elution worked last time at least! Then I started getting extra bands. Time to go back to Glycogen and ethanol percipitation I think.
  • Running new PCR at 68 start drop to 62 (for 20mer primers). Hopefully this gives better yield for AbdB and Ubx.

Rewriting Mosaic viewer for new version of Steve

  • Trying to get mosaic_to_matlab.py to work on Monet. Needs SIP and or PyQt
  • Failed to get sip to install properly on Monet: Error: Unable to open "C:\Users\Alistair\Desktop\sip-4.14.6\siplib\siplib.sbf"
  • Failed to get Py QT to install properly: Error: Make sure you have a working Qt qmake on your PATH.
  • converter runs on Cajal. Just pass it the mosaic.msc file. Pretty slow to run, takes a few hours to convert a mosaic…
  • Sip did install, it just did it in my matlab-storm working directory rather than C:/Python27 like it said it would. Still not sure if it works, currently converting on Cajal. Very slow…
  • Cajal batch run says its runs and converts but I don’t see any matlab files…?
  • Writing new mosaic viewer to work with matlab files. No master list to jump to the right files and just load those… :(.
  • rewrite not finished.

STORM

  • mRNA STORM with Hao’s cells. Switching looks good to me. Try analysis tomorrow
  • STORM BrianB sample 4. Essentially no switching. Very low background switching either, though nuclei glow steady under heavy elumination…
  • STORM BrianB sample 2. Switching nicely. Running small batch of cells overnight. cell density was better on other coverslips.
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