Human recombinant tumor necrosis factor alpha was purified in a single step to about 95% purity from Escherichia coli lysate by chromatography on hydroxyapatite. The last traces of contaminants were removed by fast protein liquid chromatography on a Mono Q column. The final product was found to be pure by gel electrophoresis with silver staining. A molecular mass of approximately 17 000 and a specific activity of 4.3 . 10(6) U/mg after a single purification step were found.
机构:
CORNELL UNIV, MED CTR,NEW YORK HOSP,COLL MED,DEPT SURG, SURG METAB LAB,525 E 68TH ST,F-2016, NEW YORK, NY 10021 USACORNELL UNIV, MED CTR,NEW YORK HOSP,COLL MED,DEPT SURG, SURG METAB LAB,525 E 68TH ST,F-2016, NEW YORK, NY 10021 USA
ROCK, CS
LOWRY, SF
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机构:
CORNELL UNIV, MED CTR,NEW YORK HOSP,COLL MED,DEPT SURG, SURG METAB LAB,525 E 68TH ST,F-2016, NEW YORK, NY 10021 USACORNELL UNIV, MED CTR,NEW YORK HOSP,COLL MED,DEPT SURG, SURG METAB LAB,525 E 68TH ST,F-2016, NEW YORK, NY 10021 USA