MUTATED IMMUNOGLOBULIN-BINDING POLYPEPTIDES

MUTATED IMMUNOGLOBULIN-BINDING POLYPEPTIDES

The invention discloses a polypeptide with improved alkaline stability, which polypeptide comprises a mutant of a B or C domain of Staphylococcus Protein A (SpA), as specified by SEQ ID NO 1 or SEQ ID NO 2, or of Protein Z, as specified by SEQ ID NO 3, wherein at least the glutamine residue at posit...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ANDER, Mats, BJÖRKMAN, Tomas, BAURÉN, Göran, RODRIGO, Gustav
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BEER
BIOCHEMISTRY
CHEMISTRY
COMPOSITIONS THEREOF
CULTURE MEDIA
ENZYMOLOGY
METALLURGY
MICROBIOLOGY
MICROORGANISMS OR ENZYMES
MUTATION OR GENETIC ENGINEERING
ORGANIC CHEMISTRY
PEPTIDES
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS
SEPARATION
SPIRITS
TRANSPORTING
VINEGAR
WINE
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Beschreibung
Zusammenfassung:The invention discloses a polypeptide with improved alkaline stability, which polypeptide comprises a mutant of a B or C domain of Staphylococcus Protein A (SpA), as specified by SEQ ID NO 1 or SEQ ID NO 2, or of Protein Z, as specified by SEQ ID NO 3, wherein at least the glutamine residue at position 9 has been mutated to an amino acid other than asparagine. The invention also discloses multimers of said polypeptide, as well as separation matrices comprising the multimers or polypeptides.