De novo design of protein logic gates

Zibo Chen, Ryan D. Kibler, Andrew Hunt, Florian Busch, Jocelynn Pearl, Mengxuan Jia, Zachary L. VanAernum, Basile I.M. Wicky, Galen Dods, Hanna Liao, Matthew S. Wilken, Christie Ciarlo, Shon Green, Hana El-Samad, John Stamatoyannopoulos, Vicki H. Wysocki, Michael C. Jewett, Scott E. Boyken, David Baker*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

122 Scopus citations


The design of modular protein logic for regulating protein function at the posttranscriptional level is a challenge for synthetic biology. Here, we describe the design of two-input AND, OR, NAND, NOR, XNOR, and NOT gates built from de novo-designed proteins. These gates regulate the association of arbitrary protein units ranging from split enzymes to transcriptional machinery in vitro, in yeast and in primary human T cells, where they control the expression of the TIM3 gene related to T cell exhaustion. Designed binding interaction cooperativity, confirmed by native mass spectrometry, makes the gates largely insensitive to stoichiometric imbalances in the inputs, and the modularity of the approach enables ready extension to three-input OR, AND, and disjunctive normal form gates. The modularity and cooperativity of the control elements, coupled with the ability to de novo design an essentially unlimited number of protein components, should enable the design of sophisticated posttranslational control logic over a wide range of biological functions.

Original languageEnglish (US)
Article numberaay2790
Issue number6486
StatePublished - Apr 3 2020

ASJC Scopus subject areas

  • General


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