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Protein Purification

Protein Purification
Proteins separation can be carried out on the basis of

solubility in salt solutions
net charge
size or mass
all of these

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Protein Purification
Affinity chromatography deals with the

None of these
protein - carbohydrate interaction
specific binding of a protein constituents for another molecule
protein - protein interaction

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Protein Purification
The best way to determine the location of protein in the purification scheme is to measure the

UV absorption
changes in the refractive index
rate of ATP synthesis
mass spectroscopy of the protein

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Protein Purification
Gel-filtration chromatography separates on the basis of

size using porous beads packed in a column
None of these
shape using porous beads packed in a column
size and shape using porous beads packed in a column

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Protein Purification
A purified protein sample contains 10 μg of protein and has an enzyme activity of 1 m mole of ATP synthesized/sec (1 unit). What is the specific activity of the final purified sample?

100,000 units/mg
10,000 units/mg.
1,000,000 units/mg
1,000 units/mg

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Protein Purification
Which of the following may be added to stabilize the protein after yeast cells disruption?

AMP
NaCl
Protease inhibitor
All of these

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