
11-0027-48 AC, 2007-09 • p14
c) Enter the sample volume and press OK to start the
template.
Note: If a 5 ml column is preferred see cue card on
p.36.
Note: If a Superloop is needed, additional information
is supplied in the instructions for Superloop.
4 Selecting Application Template and
starting the method
a) Check the communication to PrimeView. At the lower
right corner of the screen the text Controlled By:
prime should be displayed.
b) Use the arrow and OK buttons to move in the menu
tree until you nd On-Column Refolding HisTrap.
On-column refolding
1 Preparing the buers
•Use high purity water and chemicals.
• Filter all buers through a 0.45 µm lter before use.
Binding buer (port A1):
6 M guanidine hydrochloride, 20 mM Tris-HCl, 0.5 M NaCl,
5 mM imidazole, 1 mM 2-mercaptoethanol, pH 8.0*
Solubilisation buer (port A2):
6 M urea, 20 mM Tris-HCl, 0.5 M NaCl, 5 mM imidazole,
1 mM 2-mercaptoethanol, pH 8.0**
Elution buer (port A3):
20 mM Tris-HCl, 0.5 M NaCl, 0.5 M imidazole,
1 mM 2-mercaptoethanol, pH 8.0
Refolding buer (port B):
20 mM Tris-HCl, 0.5 M NaCl, 5 mM imidazole,
1 mM 2-mercaptoethanol, pH 8.0**
Prepare at least 500 ml of each eluent.
* Alternative binding buers:
5–40 mM imidazole can be included in the binding buer to
reduce unspecic binding of non-histidine-tagged proteins.
The concentration of imidazole is protein dependent and if the
protein of interest elutes or does not bind at a certain imidazole
concentration, then reduce the concentration.
** Include the same imidazole concentration as in used binding
buer.
2 Preparing the sample
a) Adjust the sample to composition of binding buer by:
• diluting the sample in binding buer or
• by buer exchange using HiTrap Desalting or HiPrep
26/10 Desalting.
b) Pass the sample through a 0.45 µm lter.
3 Preparing the system
a) Place each inlet tubing from port A (8-port valve) in
eluents as given above and the tubing from port B
(2-port valve) in the elution buer.
b) Place the three brown waste tubings in waste.
c) Connect the column between port 1 on the injection
valve (7-port valve) and the UV ow cell (see Ordering
information on next page for suitable columns).
d) Fill the fraction collector rack with 18 mm tubes
(minimum 40) and position the white plate on the
fractionation arm against the rst tube.
e) Connect a sample loop large enough for your sample
between port 2 and 6 on the injection valve. Use a
syringe to manually ll the loop.
Theoretical gradient in On-column Refolding HisTrap Application
Template.
On-Column Refolding
HisTrap
Set Sample Inj. Vol
(00.0 ml) 00.0
Run Application Template
Press OK to start
Run data displayed
Application Template
Templates
100
2 10 3060 20 2017 Min
50
Sample
Refolding
Total separation time = 160 min + sample application time
Buffer wash
& Priming
Elution
%B
Re-equilibration
Equili-
bration