Multiphor II Buffer Strip Positioner

Multiphor II Buffer Strip Positioner
80644366AB.book Page 1 Monday, March 31, 2008 1:15 PM
GE Healthcare
Multiphor II
Buffer Strip Positioner
User Manual
80644366AB.book Page 2 Monday, March 31, 2008 1:15 PM
Important user information
All users must read this entire manual to fully understand the safe use of
Multiphor II Buffer Strip Positioner.
WARNING!
The WARNING! sign highlights instructions that must be
folowed to avoid personal injury. It is important not to proceed until all stated conditions are met and clearly understood.
CAUTION!
The CAUTION! sign highlights instructions that must be followed to avoid
damage to the product or other equipment. It is important not to proceed
until all stated conditions are met and clearly understood.
IMPORTANT!
The IMPORTANT! sign highlights information that is critical for optimal
performance of the system.
Note
The Note sign is used to indicate information important for trouble-free
and optimal use of the product.
80644366AB.book Page 3 Monday, March 31, 2008 1:15 PM
Contents
Contents
1
1
Introduction .................................................................................................................................................................3
2
Placing the positioner on the cooling plate ..................................................................................................4
3
Applying the ExcelGel SDS buffer strips .........................................................................................................5
4
Applying the equilibrated IPG strips .................................................................................................................6
5
To load marker proteins .........................................................................................................................................7
6
Positioning the electrodes .....................................................................................................................................7
7
Troubleshooting .........................................................................................................................................................7
8
Care Instructions .......................................................................................................................................................7
9
Ordering Information ...............................................................................................................................................7
Introduction
The Multiphor™ II Buffer Strip Positioner is a frame with slots that sits on top of an ExcelGel™ SDS gel on the
Multiphor II cooling plate. The slots in the positioner facilitate placement of the buffer strips for electrophoresis
and hold them securely in place. A locking cam secures the positioner on the cooling plate.
Cathode
Locking cam
Anode
Fig 1 Features of the Multiphor II Buffer Strip Positioner
Multiphor II Buffer Strip Positioner User Manual 80-6443-66 Edition AB
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2 Placing the positioner on the cooling plate
Slot # Use for placing
1
2
Cathodic buffer strip, Phase 1 or entire run
Sample wells
Immobiline™ DryStrip gels (IPG strips), Phase 1*
3
4
Cathodic buffer strip, Phase 2*
Anodic buffer strip (with 11 × 25 cm ExcelGel SDS gels)
Anodic buffer strip (with 18 × 25 cm ExcelGel SDS gels)
*
* For a description of Phases 1 and 2, see the Application Note “Multiple Mini-format 2D Electrophoresis” (Code Number 80-6443-47) and the instructions for any ExcelGel
SDS gels.
2
Placing the positioner on the cooling plate
IMPORTANT! To avoid contaminating gels with spurious protein, always wear gloves when handling
Immobiline DryStrip gels (IPG strips) and ExcelGel SDS gels.
1
Place the Multiphor II Buffer Strip Positioner over the gel and cooling plate (Fig 2).
The cathodic edge of the ExcelGel SDS gel must align flush with the cathodic end of the grid on the cooling
plate.
The pegs protruding from the bottom of the positioner should be in contact with the shorter sides of the
cooling plate. Match the cathode (–) and anode (+) symbols on the positioner to the cathode and anode
symbols on the cooling plate.
Fig 2 Placing the positioner over the gel and cooling plate
2
Slide the positioner so that the cathodic (–) edge of the gel bisects the slot at position 1 (Fig 3).
Fig 3 The cathodic (-) edge of the gel bisects the slot at position 1
If using an ExcelGel SDS gel with application wells, the wells should be clearly visible throught the slot at
position 2. With this arrangement, the cathodic edge of the gel might not bisect the slot at position 1.
3
4
Lock the positioner in place by turning the grey locking cam until the positioner cannot be moved.
Multiphor II Buffer Strip Positioner User Manual 80-6443-66 Edition AB
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3 Applying the ExcelGel SDS buffer strips
3
Applying the ExcelGel SDS buffer strips
Note: Moisten your gloves with distilled water before removing the ExcelGel SDS buffer strips from their
packaging. Always handle the buffer strips by their ends.
1
Carefully peel back the foil on the colourless cathodic (–) buffer strip and turn the narrow face of the strip
downward. Align the buffer strip with the edge of the slot at position 1 and place it in the slot.
2
Place a few drops of distilled water along the top face of the buffer strip. Stroke the buffer strip with a spatula
or flat forceps to ensure complete contact along the full length of the cathodic (–) edge of the gel (Figure 5
on page 5). The buffer strip should sit snugly within the slot.
Note: If a buffer strip breaks, put the pieces together in the positioner on the gel surface.
3
Carefully peel back the foil on the yellow-coloured (+) anodic buffer strip and place it in the appropriate slot
of the positioner (Fig 4).
For 11 × 25 cm ExcelGel SDS gels, place the anodic buffer strip in slot 3, in the centre of the positioner.
For 18 × 25 cm ExcelGel SDS gels, place the anodic buffer strip in slot 4, at the anodic (+) edge of the
positioner.
.
Fig 4 Applying the buffer strip to the centre slot
4
Place a few drops of distilled water along the top face of the buffer strip. Stroke the buffer strip with a spatula
or flat forceps to ensure complete contact with the gel (Fig 5). The buffer strip should sit snugly within the
slot.
Fig 5 Stroking the buffer strip with a spatula or flat forceps
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4 Applying the equilibrated IPG strips
4
Applying the equilibrated IPG strips
1
Use forceps to remove the IPG strips from the equilibration solution.
Remove excess equilibration solution from the surface of the IPG strips by lightly tapping edgewise onto a
sheet of moistened filter paper. Alternatively, the IPG strips can be lightly and quickly blotted, gel side down,
onto moistened filter paper. The IPG strips can be left resting, gel side up, on the moistened filter paper for
up to 10 minutes before proceeding to the next step.
2
Place the IPG strip(s) gel side down on the ExcelGel through the slot at position 2.
The IPG strip(s) should lie in the centre of the slot, parallel to the buffer strip, with approximately 3 mm
between the buffer strip and the IPG strip(s). If you are applying multiple short IPG strips to the same
second dimension gel, place the strips in a single, straight line. Leave about at least 1 cm between the ends
of each IPG strip (Fig 6).
Fig 6 Placing IPG strips in slot at position 2
3
Use forceps to place one IEF sample application piece at the ends of each IPG strip underneath the plastic
tab formed by the overhanging gel support film at each end of the IPG strip. Be sure that the application
pieces touch the ends of the IPG strip (Fig 7).
Make sure that the IPG strip is in full, direct contact with the SDS gel. To remove any air bubbles, stroke the
plastic backing of the IPG strip gently with a spatula or forceps.
Note: Application pieces absorb any water that flows out of the IPG strips during electrophoresis.
Fig 7 Inserting the sample application pieces at the end of each IPG strip
6
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5 To load marker proteins
5
To load marker proteins
Place an extra application piece (or half piece) on the surface of the gel between two of the IPG strips, or just
beyond the end of one of the outer IPG strips. Pipette the marker proteins onto the extra sample application
piece. Apply the maker proteins in a volume of 15 to 20 μl. For less volume, decrease the size of the sample
application piece proportionally.
6
7
8
Positioning the electrodes
1
Place the IEF electrode holder on the electrophoresis unit, in the upper (non-contact) position, and align the
electrodes with the centre of the buffer strips.
2
Plug in the electrode connectors and carefully lower the electrode holder onto the buffer strips. See the
Multiphor II User Manual.
3
Place the safety lid on the Multiphor II unit and connect the power supply.
Troubleshooting
Symptom
Possible Cause
Solution
Crooked or wavy dye front
Gaps in contact between buffer
strip and SDS gel
Stroke the top of the buffer strip with a wet, flat
forceps or spatula to flatten the strip against the
gel.
Care Instructions
IMPORTANT! Do not autoclave the Multiphor II Buffer Strip Positioner. Do not use alcohols or organic solvents
to clean the Positioner.
After each use, carefully wash the Multiphor II Buffer Strip Positioner with mild detergent and rinse with
distilled water. Air dry.
9
Ordering Information
Multiphor II Buffer Strip Positioner
Postitioner Repair Kit
Qty.
Code No.
1
1 kit
80-6442-90
80-6445-75
Includes 8 screws + washers and 2 locking cams
Multiphor II Buffer Strip Positioner User Manual 80-6443-66 Edition AB
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Elanders i Uppsala 2008
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For contact information for your local office,
please visit:
www.gelifesciences.com/contact
GE, imagination at work and GE monogram are trademarks of General Electric Company.
GE Healthcare Bio-Sciences AB
Bjorkgatan 30
751 84 Uppsala
Sweden
All goods and services are sold subject to the terms and conditions of sale of the company
within GE Healthcare which supplies them. A copy of these terms and conditions is
available on request. Contact your local GE Healthcare representative for the most
current information.
www.gelifesciences.com
GE Healthcare UK Limited
Amersham Place, Little Chalfont, Buckinghamhire, HP7 9NA, UK
Multiphor, ExcelGel, and Immobiline are trademarks of GE Healthcare companies.
© 1999–2008 General Electric Company – All rights reserved.
First published Mar. 1999.
GE Healthcare Europe GmbH
Munzinger Strasse 5, D-79111 Freiburg, Germany
GE Healthcare Bio-Sciences Corp.
800 Centennial Avenue, P.O. Box 1327, Piscataway, NJ 08855-1327, USA
GE Healthcare Bio-Sciences KK
Sanken Bldg. 3-25-1, Hyakunincho Shinjuku-ku, Tokyo 169-0073, Japan
imagination at work
80-6443-66 AB 03/2008
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