Construction and characterization of a single-chain catalytic antibody

Richard A. Gibbs, Bruce A. Posner, David R. Filpula, Steven W. Dodd, Malcolm A.J. Finkelman, Timothy K. Lee, Marie Wroble, Marc Whitlow, Stephen J. Benkovic

Research output: Contribution to journalArticlepeer-review

61 Scopus citations


The antigen-binding (Fab) fragment of the catalytic monoclonal antibody NPN43C9 has recently been cloned by using bacteriophage λ. 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.

Original languageEnglish (US)
Pages (from-to)4001-4004
Number of pages4
JournalProceedings of the National Academy of Sciences of the United States of America
Issue number9
StatePublished - 1991

All Science Journal Classification (ASJC) codes

  • General


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