A method for producing a polypeptide product which is substantially free of an undesired protein, the process comprising culturing a host cell which is able to express said polypeptide product and which is able to express said undesired protein only in a mutant form which form has the activity of the corresponding native protein under culture conditions but is unstable under conditions at which the said polypeptide product remains stable; and recovering the desired product, wherein either the host cell culture or the recovered product is subjected for a sufficient period of time to conditions under which the undesired protein is unstable so as to denature the undesired protein The method allows the production of products which are substantially free of particular undesired contaminants.
申请公布号
EP1025235(A1)
申请公布日期
2000.08.09
申请号
EP19980946599
申请日期
1998.10.09
申请人
THE SECRETARY OF STATE FOR DEFENCE
发明人
SQUIRRELL, DAVID, JAMES;PRICE, RACHEL, LOUISE;MURPHY, MELANIE, JANE