Gel Electrophoresis
The subunit molecular weight as well as the number of subunits in the quaternary structure can be determined by

combining information from (a)and (b)
gel filtration chromatography
isoelectric focusing
SDS-PAGE electrophoresis

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Gel Electrophoresis
In SDS-PAGE, the protein sample is first

treated with a reducing agent and then with anionic detergent followed by fractionation by electrophoresis
treated with a oxidizing agent and then with anionic detergent followed by fractionation by electrophoresis
None of these
fractionated by electrophoresis then treated with an oxidizing agent followed by anionic detergent.

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Gel Electrophoresis
Electrophoresis of histones and myoglobin under non-denaturing conditions (pH = 7.0) results in

both proteins migrate to the cathode
histones migrate to the anode and myoglobin migrates to the cathode
histones migrate to the cathode and myoglobin migrates to the anode
both proteins migrate to the anode

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