Patent ID: 9527926
Filing Date: 2016-12-27
CPC Classification: A61K,A61P,C07K

Claim Text:
1. A heterodimeric protein comprising: a hinge region comprising a first immunoglobulin-like hinge polypeptide and a second immunoglobulin-like hinge polypeptide which interact together to form a dimeric hinge interface, wherein electrostatic interactions between one or more charged amino acids within the hinge interface favor interaction between the first and second hinge polypeptides over interaction between two first hinge polypeptides or two second hinge polypeptides, thereby promoting heterodimer formation over homodimer formation, wherein the hinge region is a human IgG2 hinge region, wherein the first hinge polypeptide comprises at least one amino acid modification relative to a wild-type IgG hinge region; wherein the wild-type amino acid in the first hinge polypeptide is replaced with an amino acid having an opposite charge to the corresponding amino acid in the second hinge polypeptide, wherein the amino acid modification in the hinge region is at a position selected from the group consisting of Cys223 and Glu225 as shown at