期刊名称:Proceedings of the National Academy of Sciences
印刷版ISSN:0027-8424
电子版ISSN:1091-6490
出版年度:1991
卷号:88
期号:9
页码:4001-4004
DOI:10.1073/pnas.88.9.4001
语种:English
出版社:The National Academy of Sciences of the United States of America
摘要:The antigen-binding (Fab) fragment of the catalytic monoclonal antibody NPN43C9 has recently been cloned by using bacteriophage lambda. By inserting the variable regions of this Fab coding sequence into a (NH2)-VL-linker-VH-(COOH) construct (where VL and VH represent the heavy and light chain variable regions), we have assembled a recombinant gene encoding a catalytic single-chain antigen-binding protein. This protein has been expressed in Escherichia coli and exhibits the same catalytic parameters as the parent monoclonal antibody NPN43C9. Single-chain forms of catalytic antibodies may prove valuable for structural and site-directed mutagenesis studies as well as for large-scale applications of catalytic antibodies.