Creation of antigen-dependent β-lactamase fusion protein tethered by circularly permuted antibody variable domains

  • Hiroto Iwai
  • , Miki Kojima-Misaizu
  • , Jinhua Dong
  • , Hiroshi Ueda

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

Antibody-based molecular switches that are able to recognize a range of exogenous antigens can be highly useful as a versatile biosensor. However, regulating the catalytic activity of enzymes by antibodies is still hard to achieve. Here, we describe a design method of unique antibody variable region Fv introduced with two circular permutations, called Clampbody. By tethering the Clampbody to a circularly permuted TEM-1 β-lactamase (BLA), we successfully constructed a genetically encoded molecular switch Cbody-cpBLA that shows antigen-dependent catalytic activity.

Original languageEnglish
Title of host publicationMethods in Molecular Biology
PublisherHumana Press Inc.
Pages149-165
Number of pages17
DOIs
StatePublished - 2017
Externally publishedYes

Publication series

NameMethods in Molecular Biology
Volume1596
ISSN (Print)1064-3745

Keywords

  • Allosteric regulation
  • Antibody variable region
  • Circular permutation
  • Immunosensor
  • TEM-1 β-lactamase

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