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

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