4 semi-dry transfer using the trans-blot, Sd cell – Bio-Rad Mini-PROTEAN® TGX™ Precast Gels for 2-D Electrophoresis User Manual
Page 33
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27
(–)
(+)
Membrane
Gel
Filter paper
Filter paper
Assembly of the Trans-Blot SD semi-dry cell .
Table 11 .1 . Placement of cassettes in the Trans-Blot Turbo cell .
Acceptable
Unacceptable
Option 1
Option 2
Option 1
Option 2
Upper bay (A)
1 mini gel
2 mini gels -or- 1 midi gel
1 mini gel
2 mini gels -or- 1 midi gel
-and/or-
-and/or-
-and-
-and-
Lower bay (B)
1 mini gel
2 mini gels -or- 1 midi gel
2 mini gels -or- 1 midi gel
1 mini gel
Table 11 .2 . Trans-Blot Turbo transfer protocols .
Protocol Name
MW, kD
Time, Min
1 Mini Gel
2 Mini Gels or 1 Midi Gel
STANDARD SD
Any
30
Up to 1.0 A, 25 V constant
Up to 1.0 A, 25 V constant
1.5 MM GEL
Any
10
2.5 A constant, up to 25 V
1.3 A constant, up to 25 V
HIGH MW
>150
10
2.5 A constant, up to 25 V
1.3 A constant, up to 25 V
LOW MW
<30
5
2.5 A constant, up to 25 V
1.3 A constant, up to 25 V
MIXED MW
5–150
7
2.5 A constant, up to 25 V
1.3 A constant, up to 25 V
1 Mini TGX
5–150
3
2.5 A constant, up to 25 V
N/A
11.2.4 Semi-Dry Transfer Using the Trans-Blot
®
SD Cell
1. Equilibrate the gels in transfer buffer for 10–20 min.
2. Assemble the blot for transfer using the Trans-Blot SD semi-dry transfer system.
3. Connect the Trans-Blot SD cell to a PowerPac
™
Basic power supply and begin transfer at 25 V.
Optimum transfer efficiency is generally obtained in 30 min; smaller proteins (<30 kD) may transfer more
quickly, while proteins >150 kD may show increased transfer efficiencies at up to 60 min. Run times
longer than 60 min are NOT recommended for semi-dry transfers. Refer to the Trans-Blot SD Instruction
Manual (bulletin 1703940) or the Protein Blotting Guide (bulletin 2895) for additional information.
Instruction Manual and Application Guide