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SDS-polyacrylamide gel electrophoresis of purified glucose isomerase. Lane 1, molecular mass standard; myosin (209 kDa), β-galactosidase (124 kDa), bovine serum albumin (80 kDa), ovalbumin (49.1 kDa), carbonic anhydrase (34.8 kDa), soy bean trypsin inhibitor (28.9 kDa); Lane 2, purified glucose isomerase from Streptomyces sp. CH7(1.4 μg).
