Haynes Lab:Notebook/Investigating Photo-Switchable Synthetic Nucleosomes/2012/12/05

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December 5, 2012

Results from last week's ligation

  • None of the colonies on any plates grew
  • Will retry cloning for each (H2B, LOV) by using the Gibson assembly method
  • Repeat PCR of H2B and LOV inserts with new primers
  • Note: Primers add a XbaI site upstream and the SpeI site downstream
  • Final Gibson assembly products
  1. pSB1A3 left end / H2B / LOV +His tag/ pSB1A3 right end
  2. pSB1A3 left end / LOV / H2B +His tag/ pSB1A3 right end
  • For H2B-LOV construct
  1. H2B-GFP plasmid + 1A3/H2B fwd + H2B/LOV rev
  2. LOV plasmid + H2B/LOV fwd + LOV+his/1A3 rev
  • For LOV-H2B construct
  1. H2B-GFP plasmid + 1A3/LOV fwd + LOV/H2B rev
  2. LOV plasmid + LOV/H2B fwd + H2B+his/1A3 rev

Performed table reactions twice: once for those used in H2B-LOV construct, once for those used in LOV-H2B construct

Reagents H2B LOV
Plasmid DNA 0.5 μL 0.5
primer 1 (10 μM) 1.0 1.0
primer 2 (10 μM) 1.0 1.0
2x GoTaq mix 12.5 12.5
dH2O 10.0 10.0
Total 25.0 25.0

PCR program:

  • 95°C, 3 min.
  • [95°C, 30 sec; 57°C, 30 sec.; 72°C, 30 sec.] x35 cycles
  • 72°C, 3 min.
  • 4°C ∞
  • Clean up PCR products using the Zymo Clean and Concentrator kit
  • Be sure to elute using 15 μL dH2O



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