Haynes Lab:Notebook/Investigating Photo-Switchable Synthetic Nucleosomes/2013/04/25

From OpenWetWare

Jump to: navigation, search
(Autocreate 2013/04/25 Entry for Haynes_Lab:Notebook/Investigating_Photo-Switchable_Synthetic_Nucleosomes)
Current revision (09:58, 7 May 2013) (view source)
(April 25, 2013)
 
(4 intermediate revisions not shown.)
Line 6: Line 6:
| colspan="2"|
| colspan="2"|
<!-- ##### DO NOT edit above this line unless you know what you are doing. ##### -->
<!-- ##### DO NOT edit above this line unless you know what you are doing. ##### -->
-
==Entry title==
+
==April 25, 2013==
-
* Insert content here...
+
* '''QuickChange Site Directed Mutagenesis'''
 +
* Use 50 ng of dsDNA template and 125 ng of each primer.  
 +
* Template strands are about 5kb for H2B-GFP and 7kb for LOV.
 +
{| class="wikitable" border=1 cellpadding="5" cellspacing="0"
 +
|-
 +
| Reagents || H2B || LOV
 +
|-
 +
| Plasmid DNA (50 ng) || 0.4 μL || 0.2
 +
|-
 +
| primer 1 (10 μM, 125 ng) || 1.7 || 1.7
 +
|-
 +
| primer 2 (10 μM, 125 ng) || 1.7 || 1.7
 +
|-
 +
| 10x reaction buffer|| 5.0 || 5.0
 +
|-
 +
| dNTP mix || 1.0 || 1.0
 +
|-
 +
| dH<sub>2</sub>O || 40.2 || 40.4
 +
|-
 +
| Total || 50.0 || 50.0
 +
|}
 +
* Add 1 μl of PfuTurbo DNA polymerase (2.5 U/μl) to each control and sample reaction
 +
* Thermal cycling
 +
** 95°C/ 30 sec
 +
** [95°C/ 30 sec; 55°C/ 1 min; 68°C/ 7 min (1 min/kb plasmid length)]x18
 +
** 4°C, ∞
 +
 +
* DpnI Digest (gets rid of methylated template DNA)
 +
# H2B mut rxn
 +
# H2B control (DNA, 10x buffer, Quick soln. in 25 μL; no PCR)
 +
# LOV mut rxn
 +
# LOV control (DNA, 10x buffer, Quick soln. in 25 μL; no PCR)
 +
* Add 1 μL DpnI enzyme to each sample
 +
* Gently and thoroughly mix each reaction, spin down in a microcentrifuge for 1 minute, and immediately incubate at 37°C for 1 hour to digest the parental supercoiled dsDNA
 +
* Transform 10 μl of the Dpn I-treated DNA from each control and sample reaction into separate 50-μl aliquots of BL21 cells
 +
 +
[[Image:VN_Mutagenesis_Transformation_Trial_1_BL21.png‎|thumb|frame|center|No colonies were seen the next day.]]
<!-- ##### DO NOT edit below this line unless you know what you are doing. ##### -->
<!-- ##### DO NOT edit below this line unless you know what you are doing. ##### -->

Current revision

Project name Main project page
Previous entry      Next entry

April 25, 2013

  • QuickChange Site Directed Mutagenesis
  • Use 50 ng of dsDNA template and 125 ng of each primer.
  • Template strands are about 5kb for H2B-GFP and 7kb for LOV.
Reagents H2B LOV
Plasmid DNA (50 ng) 0.4 μL 0.2
primer 1 (10 μM, 125 ng) 1.7 1.7
primer 2 (10 μM, 125 ng) 1.7 1.7
10x reaction buffer 5.0 5.0
dNTP mix 1.0 1.0
dH2O 40.2 40.4
Total 50.0 50.0
  • Add 1 μl of PfuTurbo DNA polymerase (2.5 U/μl) to each control and sample reaction
  • Thermal cycling
    • 95°C/ 30 sec
    • [95°C/ 30 sec; 55°C/ 1 min; 68°C/ 7 min (1 min/kb plasmid length)]x18
    • 4°C, ∞
  • DpnI Digest (gets rid of methylated template DNA)
  1. H2B mut rxn
  2. H2B control (DNA, 10x buffer, Quick soln. in 25 μL; no PCR)
  3. LOV mut rxn
  4. LOV control (DNA, 10x buffer, Quick soln. in 25 μL; no PCR)
  • Add 1 μL DpnI enzyme to each sample
  • Gently and thoroughly mix each reaction, spin down in a microcentrifuge for 1 minute, and immediately incubate at 37°C for 1 hour to digest the parental supercoiled dsDNA
  • Transform 10 μl of the Dpn I-treated DNA from each control and sample reaction into separate 50-μl aliquots of BL21 cells
No colonies were seen the next day.
No colonies were seen the next day.


Personal tools