MUTATED IMMUNOGLOBULIN-BINDING POLYPEPTIDES

An Fc-binding polypeptide of improved alkali stability, comprising a mutant of an Fc-binding domain of Staphylococcus Protein A (SpA), as defined by SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO:3, SEQ ID NO: 4, SEQ ID NO: 5, SEQ ID NO:6, SEQ ID NO:7, SEQ ID NO:22, SEQ ID NO 51 or SEQ ID NO 52 wherein at le...

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Bibliographic Details
Main Authors BJORKMAN, TOMAS, ANDER, MATS, RODRIGO, GUSTAV
Format Patent
LanguageEnglish
French
Published 26.05.2016
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Summary:An Fc-binding polypeptide of improved alkali stability, comprising a mutant of an Fc-binding domain of Staphylococcus Protein A (SpA), as defined by SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO:3, SEQ ID NO: 4, SEQ ID NO: 5, SEQ ID NO:6, SEQ ID NO:7, SEQ ID NO:22, SEQ ID NO 51 or SEQ ID NO 52 wherein at least the asparagine or serine residue at the position corresponding to position 11 in SEQ ID NO:4-7 has been mutated to an amino acid selected from the group consisting of glutamic acid, lysine, tyrosine, threonine, phenylalanine, leucine, isoleucine, tryptophan, methionine, valine, alanine, histidine and arginine. L'invention concerne un polypeptide de liaison à Fc d'une stabilité améliorée en milieu alcalin, comprenant un mutant d'un domaine de liaison à Fc de la protéine A de Staphylococcus (SpA), tel que défini par SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3, SEQ ID NO: 4, SEQ ID NO: 5, SEQ ID NO: 6, SEQ ID NO: 7, SEQ ID NO: 22, SEQ ID NO: 51 ou SEQ ID NO: 52, au moins le résidu asparagine ou sérine à la position correspondant à la position 11 dans SEQ ID NO: 4 à 7 ayant été muté en un acide aminé sélectionné dans le groupe constitué par l'acide glutamique, la lysine, la tyrosine, la thréonine, la phénylalanine, la leucine, l'isoleucine, le tryptophane, la méthionine, la valine, l'alanine, l'histidine et l'arginine.
Bibliography:Application Number: WO2015EP76639