Fermentation processes for preparing soluble ricin A
US5547867A · kind A · utility
2Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1994 |
| Grant date | Aug 20, 1996 |
| Priority date | — |
| Expiry date | Mar 28, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12P21/02
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Processes for preparing polypeptides such as ricin A such that soluble polypeptide may be obtained. The pH may be adjusted during the process or the temperature decreased during the terminal portion of the cultivation, and yeast extract may be added to the growth medium during the cultivation. In the case of ricin A the pH is generally adjusted by lowering the pH from a first value such as 6.7 to a second value such as a value between about 5.5 and 6.7.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.