Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Blood proteins or globulins – e.g. – proteoglycans – platelet...
Patent
1985-02-25
1987-10-06
Kight, John
Chemistry: natural resins or derivatives; peptides or proteins;
Proteins, i.e., more than 100 amino acid residues
Blood proteins or globulins, e.g., proteoglycans, platelet...
530389, 530390, 530402, 530405, 424 85, 436548, 436547, C07K 308
Patent
active
046984208
ABSTRACT:
Antibodies which contain reduced sulfhydryl groups in proximity of the carboxyl terminal end of their heavy chain are coupled to another moiety which has an available sulfhydryl for forming a disulfide bond with the antibodies. IgM is a typical antibody which contains a suitable structure by virtue of its cysteine residue in proximity to the carboxyl terminal end of its heavy chain. A typical hybrid is formed with IgM and the A chain of a toxin such as ricin by the formation of a covalent disulfide bond therebetween. Use of antibodies having structures such as IgM result in hybrid formation in which the moiety joined to the antibody is site directed with respect to its bonding location on the antibody. Such hybrids have utility including in vivo therapeutic applications in which the functionality of the antibody is not deleteriously impaired by the moiety bonded thereto.
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Draper Garnette D.
Kight John
Xoma Corporation
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