Fusion proteins

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/62 (2006.01) A61K 38/17 (2006.01) A61K 47/48 (2006.01) A61P 37/04 (2006.01) C07K 16/00 (2006.01) C07K 19/00 (2006.01) C12N 5/10 (2006.01) C12N 15/13 (2006.01) C12N 15/18 (2006.01) C12N 15/27 (2006.01) C12N 15/63 (2006.01) C12P 21/02 (2006.01)

Patent

CA 2720628

A fusion protein having a non-immunoglobulin polypeptide having a cysteine residue proximal to the C terminal thereof, and an immunoglobulin component with a mutated hinge region is provided. The mutation comprises a point mutated site corresponding in position to the position in a native hinge region of the cysteine residue located nearest the cysteine residue of the non-Ig component. The distance from the cysteine residue of the non-immunoglobulin polypeptide and any remaining cysteine residues of the mutated hinge region is sufficient to prevent the formation of a disulphide bond therebetween.

L'invention porte sur une protéine de fusion ayant un polypeptide non-immunoglobuline avec un résidu cystéine proximal par rapport à l'extrémité C-terminale de celui-ci, et un composant immunoglobuline avec une région d'articulation ayant muté. La mutation comprend un site ayant muté par point correspondant en position à la position dans une région d'articulation native du résidu cystéine situé le plus près du résidu cystéine du composant non-Ig. La distance par rapport au résidu cystéine du polypeptide non-immunoglobuline et n'importe quels résidus cystéine restants de la région d'articulation ayant muté est suffisante pour empêcher la formation d'une liaison disulfure entre les deux.

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