Linker and linked fusion polypeptides

Chemistry: natural resins or derivatives; peptides or proteins; – Peptides of 3 to 100 amino acid residues – 25 or more amino acid residues in defined sequence

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530326, 530350, 5303911, 5303915, 530402, 536 231, A61K 3800, C07K 100, C07K 1600, C07H 2102

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059902752

ABSTRACT:
The invention is directed to a novel peptide linker useful for connecting polypeptide constituents into a novel linked fusion polypeptide. The peptide linker of the invention provides greater stability and is less susceptible to aggregation than previously known peptide linkers. The peptide linker of the invention may be up to about 50 amino acids in length and contains at least one occurrence of a charged amino acid followed by a proline. When used for making a single chain Fv (sFv), the peptide linker is preferably from 18 to about 30 amino acids in length. A preferred embodiment of the peptide linker of the invention comprises the sequence:

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