The 3 proteins have the following properties. Which is the correct order of steps to extract them? + ethyl acetate, + (NH4)2SO4 at 20% saturation, centrifugation, + detergent (Triton X), buffer the lysate (pH=10), centrifugation, collect precipitate + ethyl acetate, + detergent (Triton X), + (NH4)2SO4 at 20% saturation, centrifugation, buffer the lysate (pH=10), centrifugation, collect precipitate + 1 M NaCl, + detergent (sodium dodecyI suIfate), centrifugation, +(NH4)2SO4 at 60% saturation, buffer at pH 7, centrifugation, collect precipitate + ethyl acetate, adjust pH to 7.3, centrifugation, collect supernate, +detergent (Triton X) to precipitate, +(NH4)2SO4 at 30% saturation, centrifugation, collect precipitate

Biochemistry
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ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
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The 3 proteins have the following properties. Which is the correct order of steps to extract them?

  • + ethyl acetate, + (NH4)2SOat 20% saturation, centrifugation, + detergent (Triton X), buffer the lysate (pH=10), centrifugation, collect precipitate
  • + ethyl acetate, + detergent (Triton X), + (NH4)2SOat 20% saturation, centrifugation, buffer the lysate (pH=10), centrifugation, collect precipitate
  • + 1 M NaCl, + detergent (sodium dodecyI suIfate), centrifugation, +(NH4)2SOat 60% saturation, buffer at pH 7, centrifugation, collect precipitate
  • + ethyl acetate, adjust pH to 7.3, centrifugation, collect supernate, +detergent (Triton X) to precipitate, +(NH4)2SOat 30% saturation, centrifugation, collect precipitate
% (NH4)2SO4 to
precipitate
Protein
pl
Location
7.0
Mitochondrial matrix 30
7.3
Cytosol
20
9.8
Mitochondrial matrix 60
Transcribed Image Text:% (NH4)2SO4 to precipitate Protein pl Location 7.0 Mitochondrial matrix 30 7.3 Cytosol 20 9.8 Mitochondrial matrix 60
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