The present invention provides a means capable of efficiently manufacturing a fused substance of an Fc protein and a substance of interest (for example, a peptide). Specifically, the present invention provides an azide group-containing Fc protein represented by formula (1):
N3-La-Phe-Lb-Fc (1)
wherein N3 represents an azide group;
La represents a bond or a divalent group;
Phe represents a residue of phenylalanine or a derivative thereof;
Lb represents a lysine residue or an arginine residue, or a peptide linker containing two or more amino acid residues having a lysine residue or an arginine residue at/on the N-terminus; and
Fc represents an Fc protein;
and the like.
本发明提供了一种能够高效制造 Fc 蛋白和相关物质(例如肽)融合物质的方法。具体而言,本发明提供了一种由式(1)表示的含
叠氮基团的 Fc 蛋白:
N3-La-Phe-Lb-Fc (1)
其中 N3 代表
叠氮基团;
La 代表键或二价基团;
Phe 代表苯丙
氨酸残基或其衍
生物;
Lb 代表赖
氨酸残基或精
氨酸残基,或包含两个或两个以上在 N-末端具有赖
氨酸残基或精
氨酸残基的
氨基酸残基的肽链;以及
Fc 代表 Fc 蛋白;
等等。