The product of pG2/Rosetta(DE3) was proved soluble,then it was purified to be electrophoretically pure by ammonium sulfate precipitationand cation exchange chromatography.

• pcGH2/Roseta(DE3)的表达产物为可溶性蛋白； 该产物用硫酸铵分级沉降和阳离子交换层析分离纯化，达到电泳纯。