Process for the extraction and purification of proteins from culture media producing them
US4857317A · kind A · utility
9Cited by
11References
4Claims
0Family size
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Key dates
| Filing date | Apr 27, 1987 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | Apr 27, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S530/806
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The process is applicable to the supernatant of engineered yeast cells disrupted in the presence of a non-ionic detergent; it comprises the precipitation of contaminants by polyethylene glycol and the treatment of this latter supernatant with either a bivalent metal cation or, after eventual ultrafiltration, with ammonium sulfate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.