IgA-BINDING PEPTIDE AND PURIFICATION OF IgA THEREBY
    1.
    发明公开
    IgA-BINDING PEPTIDE AND PURIFICATION OF IgA THEREBY 审中-公开
    IGA-BINDENDES PEPTID UND IGA-REINIGUNG DAMIT

    公开(公告)号:EP2787079A1

    公开(公告)日:2014-10-08

    申请号:EP12852729.8

    申请日:2012-11-29

    摘要: This invention provides a peptide that comprises an amino acid sequence consisting of 14 to 18 amino acid residues represented by Formula (I) and is capable of binding to human IgA:

            H-(X 1 )-V-C-L-S-Y-R-(X 2 )-(X 3 )-G-(X 4 )-P-(X 5 )-C-(X 6 )-(X 7 )-(X 8 )     (I) (SEQ ID NO: 1)

    wherein each X is independently selected from among the following: X 1 represents a Gln residue or a Met residue; X 2 and X 3 each independently represent an arbitrary amino acid residue other than Cys or either or both thereof are deleted; X 4 represents an Arg residue or a Gln residue; X 5 represents a Val residue or a Thr residue; X 6 represents a Phe residue or a Tyr residue; X 7 represents a Ser residue or is null; and X 8 represents a Leu residue, a Thr residue, or is null, provided that, when X 1 represents a Met residue, X 7 represents a Ser residue or is null, and X 8 is null. The invention also provides a method for purifying or analyzing human IgA using such peptide.

    摘要翻译: 本发明提供一种肽,其包含由式(I)表示的14至18个氨基酸残基并能够结合人IgA的氨基酸序列:€ƒ€€ƒ€ƒ€ƒ€ƒH - (X 1)-VCLSYR-(X 2) - (X 3)-G-(X 4)-P-(X 5)-C-(X 6) - (X 7) - (X 8) (I)(I)(SEQ ID NO:1),其中每个X独立地选自以下各项:X 1表示Gln残基或Met残基; X 2和X 3各自独立地表示除Cys之外的任意氨基酸残基,或者两者之一或两者都被缺失; X 4表示Arg残基或Gln残基; X 5表示Val残基或Thr残基; X 6表示Phe残基或Tyr残基; X 7表示Ser残基或无效; 并且X 8表示Leu残基,Thr残基或为空,条件是当X 1表示Met残基时,X 7表示Ser残基或为空,X 8为空。 本发明还提供了使用这种肽纯化或分析人IgA的方法。