Nature Communications (Dec 2020)

Bivalent antibody pliers inhibit β-tryptase by an allosteric mechanism dependent on the IgG hinge

  • Henry R. Maun,
  • Rajesh Vij,
  • Benjamin T. Walters,
  • Ashley Morando,
  • Janet K. Jackman,
  • Ping Wu,
  • Alberto Estevez,
  • Xiaocheng Chen,
  • Yvonne Franke,
  • Michael T. Lipari,
  • Mark S. Dennis,
  • Daniel Kirchhofer,
  • Claudio Ciferri,
  • Kelly M. Loyet,
  • Tangsheng Yi,
  • Charles Eigenbrot,
  • Robert A. Lazarus,
  • James T. Koerber

DOI
https://doi.org/10.1038/s41467-020-20143-x
Journal volume & issue
Vol. 11, no. 1
pp. 1 – 12

Abstract

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β-tryptases are responsible for most of the proteolytic activity during mast cell activation. Here, the authors develop β-tryptase-inhibiting antibodies and provide structural and biochemical evidence that the bivalency of the antibodies is a prerequisite for their inhibitory activity.