| 摘要 |
The present disclosure generally relates to highly pure plasmid compositions having low, or undetectable, levels of colanic acid and other contaminants made by a process that comprises purifying plasmid DNA by chromatography, treating the purified plasmid DNA with a polypeptide that digests colanic acid under conditions that digest the colonic acid, and separating the plasmid DNA from the digested colonic acid. |
