The present invention provides a technique enabling modification of a soluble protein and in particular regioselective modification of a soluble protein. More specifically, the present invention provides a compound having an affinity substance to a soluble protein, a cleavable portion, and a reactive group represented by the following Formula (I):
A-L-B-R (I)
wherein
A is an affinity substance to a soluble protein;
L is a cleavable linker which is a divalent group comprising a cleavable portion;
B is (a) a divalent group comprising a bioorthogonal functional group or (b) a divalent group comprising no bioorthogonal functional group; and
R is a reactive group to the soluble protein; or
a salt thereof.
本发明提供了一种对可溶性蛋白质进行修饰的技术,特别是对可溶性蛋白质进行区域选择性修饰的技术。更具体地说,本发明提供了一种化合物,该化合物具有与可溶性蛋白质的亲和物质、可裂解部分和由下式(I)代表的活性基团:
A-L-B-R (I)
其中
A 是与可溶性蛋白质亲和的物质;
L 是可裂解连接体,是由可裂解部分组成的二价基团;
B 是(a)包含
生物正交官能团的二价基团或(b)不包含
生物正交官能团的二价基团;以及
R 是可溶性蛋白质的活性基团;或
其盐。