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Difference between revisions of "Talk:MiPNet14.13 Medium-MiR06"

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== Preparation of MiR05 (MiR06) stock solution ==
== Preparation of MiR05 (MiR06) stock solution ==
* This is the version up to 2013-09-07:
* This is the version up to 2013-09-07:
::1) weigh given amounts of the [[#Chemicals for MiR05|listed chemicals]] (except BSA and lactobionic acid) and transfer to a 1000 ml glass beaker
::1) Weigh given amounts of the [[#Chemicals for MiR05|listed chemicals]] (except BSA and lactobionic acid) and transfer to a 1000 ml glass beaker
::2) disrupt big lumps mechanically. It is recommended to do this before adding water, because during dissolution these lumps do not disintegrate easily.
::2) Disrupt big lumps mechanically. It is recommended to do this before adding water, because during dissolution these lumps do not disintegrate easily.
::3) add ~800 ml H<sub>2</sub>O and dissolve on a magnetic stirrer at ~30 °C
::3) Add ~800 ml H<sub>2</sub>O and dissolve on a magnetic stirrer at ~30 °C
::4) add 120 ml of [[#Preparation of K-lactobionate stock solution|K-lactobionate stock solution]]
::4) Add 120 ml of [[#Preparation of K-lactobionate stock solution|K-lactobionate stock solution]]
::5) adjust the pH to 7.1 with 5 N KOH at 30 °C  
::5) Adjust the pH to 7.1 with 5 N KOH at 30 °C  
::6) transfer the MiR05 stock solution to a 1000 ml volumentric glass flask and add H20 to a final volume of 1000 ml <span style="color:#43CD80"> = '''MiR05''' </span>
::6) Transfer the MiR05 stock solution to a 1000 ml volumentric glass flask and add H20 to a final volume of 1000 ml <span style="color:#43CD80"> = '''MiR05''' </span>
::7) check pH again and adjust if necessary with small amounts of 5 N KOH
::7) Check pH again and adjust if necessary with small amounts of 5 N KOH
::8) dissolve the BSA in a subsample of the MiR05 stock solution and add to the final MiR05 (the separate preparation of the BSA solution is recommended, since BSA produces foams that do not dissolve easily)
::8) Dissolve the BSA in a subsample of the MiR05 stock solution and add to the final MiR05 (the separate preparation of the BSA solution is recommended, since BSA produces foams that do not dissolve easily)
::9) to prepare <span style="color:#2E8B57"> '''MiR06'''</span>, add 280 000 units of catalase (100 mg of catalase powder containing 2800 u/mg solid) per 1 L MiR05 (280 units / ml final concentration)
::9) To prepare <span style="color:#2E8B57"> '''MiR06'''</span>, add 280 000 units of catalase (100 mg of catalase powder containing 2800 U/mg solid) per 1 L MiR05 (280 units / ml final concentration)
::10) divide into 40 ml portions and store at -20 °C in plastic vials  
::10) Divide into 40 ml portions and store at -20 °C in plastic vials  


::<span style="color:#2E8B57"> '''MiR06''' </span> can also be prepared by adding 5 µl of the [[#Preparation of catalase stock solution|catalase stock solution]] directly into the O2k-chamber filled with MiR05 at the start of the experiment. The final catalase concentration in the 2 ml Oxygraph-2k chamber = 280 u/ml.
::'''MiR06''' can also be prepared by adding 5 µl of the [[#Preparation of catalase stock solution|catalase stock solution]] directly into the O2k-chamber filled with MiR05 at the start of the experiment. The final catalase concentration in the 2 ml Oxygraph-2k chamber = 280 U/ml.




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Revision as of 11:41, 27 April 2014

Preparation of MiR05 (MiR06) stock solution

  • This is the version up to 2013-09-07:
1) Weigh given amounts of the listed chemicals (except BSA and lactobionic acid) and transfer to a 1000 ml glass beaker
2) Disrupt big lumps mechanically. It is recommended to do this before adding water, because during dissolution these lumps do not disintegrate easily.
3) Add ~800 ml H2O and dissolve on a magnetic stirrer at ~30 °C
4) Add 120 ml of K-lactobionate stock solution
5) Adjust the pH to 7.1 with 5 N KOH at 30 °C
6) Transfer the MiR05 stock solution to a 1000 ml volumentric glass flask and add H20 to a final volume of 1000 ml = MiR05
7) Check pH again and adjust if necessary with small amounts of 5 N KOH
8) Dissolve the BSA in a subsample of the MiR05 stock solution and add to the final MiR05 (the separate preparation of the BSA solution is recommended, since BSA produces foams that do not dissolve easily)
9) To prepare MiR06, add 280 000 units of catalase (100 mg of catalase powder containing 2800 U/mg solid) per 1 L MiR05 (280 units / ml final concentration)
10) Divide into 40 ml portions and store at -20 °C in plastic vials
MiR06 can also be prepared by adding 5 µl of the catalase stock solution directly into the O2k-chamber filled with MiR05 at the start of the experiment. The final catalase concentration in the 2 ml Oxygraph-2k chamber = 280 U/ml.


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MiPNet14.13 Medium-MiR06 has been accessed more than

  • 5,000 times (2013-09-07)