Urease. X. A study by gel electrophoresis of its dissociation by sodium dodecyl sulfate

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Abstract
Urease, m.w. 480 000, treated with an excess of sodium dodecyl sulfate is converted to a product of greatly increased mobility in polyacrylamide gel electrophoresis. We estimate its weight to be about 80 000. Treatment with excess thiol and detergent yielded the same product as detergent alone, indicating that the subunit or subunits do not contain polypeptide chains linked by disulfide bonds.