Molecular basis for the binding polyspecificity of an anti‐cholera toxin peptide 3 monoclonal antibody
Molecular basis for the binding polyspecificity of an anti‐cholera toxin peptide 3 monoclonal antibody
复制标题
抗霍乱毒素肽3单克隆抗体结合多特异性的分子基础
DOI:
10.1002/jmr.757
复制
发表时间:
2006
影响因子:
2.7
通讯作者:
Kramer A.
中科院分区:
文献类型:
--
作者:
Otte L;Knaute T;Schneider-Mergener J;Kramer A.
The onset of autoimmune diseases is proposed to involve binding promiscuity of antibodies (Abs) and T‐cells, an often reported yet poorly understood phenomenon. Here, we attempt to approach two questions: first, is binding promiscuity a general feature of monoclonal antibodies (mAbs) and second, what is the molecular basis for polyspecificity? To this end, the anti‐cholera toxin peptide 3 (CTP3) mAb TE33 was investigated for polyspecific binding properties. Screening of phage display libraries identified two epitope‐unrelated peptides that specifically bound TE33 with affinities similar to or 100‐fold higher than the wild‐type epitope. Substitutional analyses revealed distinct key residue patterns recognized by the antibody suggesting a unique binding mode for each peptide. A database query with one of the consensus motifs and a subsequent binding study uncovered 45 peptides (derived from heterologous proteins) that bound TE33. To better understand the structural basis of the observed polyspecificity we modeled the new cyclic epitope in complex with TE33. The interactions between this peptide and TE33 suggested by our model are substantially different from the interactions observed in the X‐ray structure of the wild‐type epitope complex. However, the overall binding conformation of the peptides is similar. Together, our results support the theory of a general polyspecific potential of mAbs. Copyright © 2005 John Wiley & Sons, Ltd.
登录
查看更多内容
影响因子:
2.9
作者:
J. Anglister;C. Jacob;O. Assulin;G. Ast;R. Pinker;R. Arnon
通讯作者:
R. Arnon
DOI:
--
发表时间:
2002
期刊:
The FASEB Journal
影响因子:
--
作者:
I. Robey;A. Edmundson;S. Schluter;D. Yocum;J. Marchalonis
通讯作者:
J. Marchalonis
影响因子:
--
作者:
NEMETHY, G;GIBSON, KD;SCHERAGA, HA
通讯作者:
SCHERAGA, HA
影响因子:
5.6
作者:
ABAGYAN, R;ARGOS, P
通讯作者:
ARGOS, P
影响因子:
5.6
作者:
Yingyao Zhou;R. Abagyan
通讯作者:
R. Abagyan