| 摘要 |
The present invention pertains to recombinant neurotoxin polypeptides and the manufacture thereof. Specifically, it relates to a polynucleotide encoding a neurotoxin polypeptide comprising a light chain, a linker and a heavy chain, wherein the linker is a modified linker comprising an heterologous amino acid sequence which confers at least one physicochemical property to the polypeptide which allows for separation of partially processed and/or unprocessed neurotoxin polypeptides from processed neurotoxin polypeptides, said heterologous amino acid sequence being flanked N- and C-terminally by a protease recognition and cleavage site Further encompassed by the present invention are vectors and host cells comprising the polynucleotide of the invention as well as polypeptides encoded by the polynucleotide and methods for the manufacture of processed neurotoxin polypeptide. |
