沉淀蛋白质得常用方法(T C A、乙醇、丙酮沉淀蛋白操作步骤)T C A-DOC F o r pre c ipita t i o n o f v er y l o wp rotein c o n c e ntrat i on 1)To on e vo l u m e of prote in so lu tio n, a d d 1/10 0vol、 of 2% DOC (Na deoxyc h o l ate, d e tergen t)、 2) Vor t ex an d le t sit f o r 3 0 min a t 4o C、 ﻫ3) A dd 1/10 o f Trichl o roaceti c acid (T C A) 100% vort e x and l et sit ON a t4oC (pre par a t i on of 1 0 0% T C A: 454 m l H2 O/kg TCA、 Mai ntain i n d ark bott l e a t 4 oC、Be car e ful, u se glo v es
)、 4) S pi n1 5 m in 4o Ci n mic r o f uge a t maximum sp e ed (150 0 0 g)、 Ca refu ll y discha r ge s upern at ant a nd r etain the pellet: d r y t u b e b y i n versi o n on ti s sue paper (pe llet may be diffic u lt to s ee) 、[O PT IO N: W as h pellet tw i ce with one v olume of col d ac e t o ne (a ce to n e ke