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

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

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

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