Expanding the Chemogenetic Toolbox by Circular Permutation
Expanding the Chemogenetic Toolbox by Circular Permutation
To expand the repertoire of chemogenetic tools tailored for molecular and cellular engineering, we describe herein the design of cpRAPID as a circularly permuted rapamycin-inducible dimerization system composed of the canonical FK506-binding protein (FKBP) and circular permutants of FKBP12-rapamycin binding domain (cpFRB). By permuting the topology of the four helices within FRB, we have created cpFRB-FKBP pairs that respond to ligand with varying activation kinetics and dynamics. The cpRAPID system enables chemical-controllable subcellular redistribution of proteins, as well as inducible transcriptional activation when coupled with the CRISPR activation (CRISPRa) technology to induce a GFP reporter and endogenous gene expression. We have further demonstrated the use of cpRAPID to generate chemically switchable split nanobody (designated Chessbody) for ligand-gated antigen recognition in living cells. Collectively, the circular permutation approach offers a powerful means for diversifying the chemogenetics toolbox to benefit the burgeoning synthetic biology field.
- The University of Texas System United States
- Texas A&M University United States
Sirolimus, Tacrolimus Binding Protein 1A, Ligands, Protein Engineering, Protein Structure, Secondary, Recombinant Proteins, Tacrolimus Binding Proteins, HEK293 Cells, Protein Domains, Humans, Synthetic Biology, Cloning, Molecular, HeLa Cells
Sirolimus, Tacrolimus Binding Protein 1A, Ligands, Protein Engineering, Protein Structure, Secondary, Recombinant Proteins, Tacrolimus Binding Proteins, HEK293 Cells, Protein Domains, Humans, Synthetic Biology, Cloning, Molecular, HeLa Cells
1 Research products, page 1 of 1
- 1999IsRelatedTo
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).7 popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.Top 10% influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).Average impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.Average
