Purification of polypeptides
US7169908B2 · kind B2 · utility
17Cited by
11References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2004 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | May 4, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12P21/02
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A method for purifying a desired heterologous polypeptide from microbial fermentation broth or homogenate in which it is produced and solubilized is described. This method involves adding to the broth or homogenate an effective amount of a solution of 6,9-diamino-2-ethoxyacridine lactate (ethacridine lactate) to precipitate host cell impurities under conditions wherein the majority of polypeptide remains soluble, and separating the desired polypeptide from the broth or homogenate. The broth or homogenate containing the ethacridine lactate and polypeptide is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.