申请人:Covx Technologies Ireland Limited
公开号:US20130323234A1
公开(公告)日:2013-12-05
The present invention relates to a polypeptide comprising 7 β-strands A, B, C, D, E, F, and G sequentially connected together by connecting chains of amino acids, and a first α-helix sequentially located on the EF chain between β-strands E and F, wherein the β-strands are arranged so as to form a first β-sheet comprising β-strands A, B, D, and E, and a second β-sheet comprising β-strands C, F and G, said first and second β-sheets being covalently bonded together so as to form a first Ig domain; wherein the EF chain between β-strands E and F comprises the sequence X
1
-X
2
-X
3
-X
4
-K
5
H
6
(SEQ ID NO:98), and X
1
, X
3
and X
4
are each independently any amino acid residue, characterized in that X
2
is selected from the group consisting of A, G, I, V, L, R, S, T, Q, P, N, M, H, W, and pharmaceutically acceptable salts, stereoisomers, tautomers, solvates, and prodrugs thereof
本发明涉及一种多肽,其包括7个β-折叠A、B、C、D、E、F和G,这些折叠依次通过氨基酸连接链相互连接,以及第一个α-螺旋,该螺旋依次位于EF链上,位于β-折叠E和F之间。其中,β-折叠排列成第一个β-片层,包括β-折叠A、B、D和E,以及第二个β-片层,包括β-折叠C、F和G,所述第一和第二个β-片层通过共价键结合在一起,形成第一个Ig结构域;其中,位于β-折叠E和F之间的EF链包括序列X1-X2-X3-X4-K5H6(SEQ ID NO:98),其中X1、X3和X4分别独立地表示任何氨基酸残基,其特征在于X2选自包括A、G、I、V、L、R、S、T、Q、P、N、M、H、W的群体,以及其药学上可接受的盐、立体异构体、互变异构体、溶剂化物和前药。