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TCA protein precipitation protocol

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TCA protein precipitation protocol (orginally from Luis Sanchez)revised: October 10, 2001author: clwStock Solutions: 100% (w/v) Trichloroacetic acid (TCA)recipe: dissolve 500g TCA (as shipped) into 350 ml dH2O, store at RT.(for details, check Maniatias under TCA ppt ) precipitation protocol : 1 volume of TCA stock to 4 volumes of protein in tube with maximum vol., add 250 l TCA to 10 min at 4 tube in microcentrifuge at 14K rpm, 5 supernatant, leaving protein pellet intact. Pellet should be formed from whitish,fluffy pellet with 200 l cold tune in microfuge at 14K rpm, steps 4-6 for a total of 2 acetone pellet by placing tube in 95 C heat block for 5-10 min to drive off SDS-PAGE, add 2X or 4X sample buffer (with or without ME) and boil smaple for10 min in 95 C herat block before loading

Dry pellet by placing tube in 95°C heat block for 5-10 min to drive off acetone. 9. For SDS-PAGE, add 2X or 4X sample buffer (with or without β ME) and boil smaple for

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