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myprayer: ½ð±Ò+1, ÔùÈËõ¹åÊÖÓÐÓàÏ㣬·Ö×ÓÉúÎïÆÚ´ýÄã¸ü¶à¾«²Ê¡£ 2014-05-29 22:19:52
ÆÕͨµÄTriton-x114¾Í¿ÉÒÔÁ˰ѣ¬ÏÂÃæÓÐÒ»¸öºÜ¼òµ¥µÄprotocol
NRC Institute for Biological Sciences
Triton X-114 extraction protocol (Hydrophobic protein preparation)

Ressuspend cells in Solution A (dil 1/8) and add 15 ¦Ìl of mammalian cocktail proteases inhibitor (Sigma).
Add 1 third of the volume of solution B
Incubate on ice for 1 hour with frequent vortexing.
Centrifuge at 10 000g for 10 minutes at 4¡ãC to pellet unbroken cells and nuclei.
Transfer supernatant in clean eppendorfs then incubate at 30¡ãC for 3 minutes (until sln is cloudy).
Centrifuge at 1 300g for 10 minutes at room temperature.
Transfer Aqueous phase in new eppendorf (but keep detergent phase at room temperature).
Add X volume of triton X-114 to Aqueous phase:

Vol of Aq phase = X vol of triton X-114
24.6
Shake well then incubate 3 minutes at 30¡ãC (until cloudy) then transfer on top of detergent phase slowly.
Centrifuge at 1 300g for 10 minutes at room temperature.
Remove Aqueous phase with pipette down to detergent interphase.
Precipitate hydrophobic protein (detergent phase) with 10X volume of acetone. Place overnight at -20¡ãC.
Pellet proteins by centrifugation at max speed for 10 minutes at 4¡ãC. Ressuspend proteins in IEF sln (7M urea, 2M thiourea, 4% CHAPS, 1% DTT) then precipitate protein again with 10 volume of acetone. Place 5-10 min at -20¡ãC.
Pellet proteins by centrifugation at max speed for 10 minutes at 4¡ãC. Air dry pellet then dissolve protein in IEF solution
Solution:

Solution A: 80 mM Tris-HCl, pH 7.4 ; 1,2M NaCl

0,63 g Tris-HCl
3,51 g NaCl
Dissolve in 30 ml of water
Adjust pH to 7.4
Adjust volume to 50 ml with water
Solution B: 40 mM Tris-HCl, pH 7.4 ; 600 mM NaCl ; 4% triton X-114

5 ml of sln A
Add triton to have a final concentration off 4%

4% x 10 ml = ml
[triton X114]
Adjust volume to 10 ml with water
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zhumeidong

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2Â¥: Originally posted by ·ÉÔ¼·èÈËÔº at 2014-05-29 21:43:00
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NRC Institute for Biological Sciences
Triton X-114 extraction protocol (Hydrophobic protein preparation)

Ressuspend cells in Solution A (d ...

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3Â¥: Originally posted by zhumeidong at 2014-05-29 22:18:57
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jurkat.1640

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zhumeidong

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6Â¥: Originally posted by jurkat.1640 at 2014-05-30 11:06:48
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zhumeidong

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4Â¥: Originally posted by ·ÉÔ¼·èÈËÔº at 2014-05-29 22:21:59
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zhumeidong

ľ³æ (СÓÐÃûÆø)

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6Â¥: Originally posted by jurkat.1640 at 2014-05-30 11:06:48
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7Â¥: Originally posted by zhumeidong at 2014-05-30 18:36:12
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