Hoffmann-la Roche Inc.

F. Hoffmann-la Roche Ag

Markus Haberger

Dietmar Reusch

Christine Jung

The current invention comprises a method for producing an immunoglobulin or immunoglobulin fragment with defined glycostructure comprising the following steps: a) providing an affinity chromatography column eluate containing the immunoglobulin or immunoglobulin fragment, b) incubating the affinity chromatography column eluate with (&#x3b1;1,3)galactosidase of plant origin, e.g. from green coffee beans (EC 3.2.1.22), c) applying the incubated affinity chromatography column eluate to a protein A chromatography material and recovering the immunoglobulin or immunoglobulin fragment from the protein A chromatography material and thereby producing an immunoglobulin or immunoglobulin fragment with defined glycostructure.

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Munich, Germany

Markus Haberger