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Casey GR, Zhou X, Lesiak L, Xu B, Fang Y, Becker DF, Stains CI. An Evolutionary Strategy for Identification of Higher Order, Green Fluorescent Host-Guest Pairs Compatible with Living Systems. Chemistry 2020; 26:16721-16726. [PMID: 32725914 DOI: 10.1002/chem.202002423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 07/26/2020] [Indexed: 11/09/2022]
Abstract
Engineered miniprotein host-small-molecule guest pairs could be utilized to design new processes within cells as well as investigate fundamental aspects of cell signaling mechanisms. However, the development of host-guest pairs capable of functioning in living systems has proven challenging. Moreover, few examples of host-guest pairs with stoichiometries other than 2:1 exist, significantly hindering the ability to study the influence of oligomerization state on signaling fidelity. Herein, we present an approach to identify host-guest systems for relatively small green fluorescent guests by incorporation into cyclic peptides. The optimal host-guest pair produced a 10-fold increase in green fluorescence signal upon binding. Biophysical characterization clearly demonstrated higher order supramolecular assembly, which could be visualized on the surface of living yeast cells using a turn-on fluorescence readout. This work further defines evolutionary design principles to afford host-guest pairs with stoichiometries other than 2:1 and enables the identification of spectrally orthogonal host-guest pairs.
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Affiliation(s)
- Garrett R Casey
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA.,Department of Chemistry and Physics, Southeast Missouri State University, Cape Girardeau, MO, 63701, USA
| | - Xinqi Zhou
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Lauren Lesiak
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Bi Xu
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Yuan Fang
- Department of Chemistry, University of Virginia, Charlottesville, VA, 22904, USA
| | - Donald F Becker
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Cliff I Stains
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA.,Department of Chemistry, University of Virginia, Charlottesville, VA, 22904, USA.,Nebraska Center for Integrated Biomolecular Communication, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA.,Cancer Genes and Molecular Regulation Program, Fred & Pamela Buffet Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198, USA.,University of Virginia Cancer Center, University of Virginia, Charlottesville, VA, 22904, USA
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Gautier A, Tebo AG. Fluorogenic Protein‐Based Strategies for Detection, Actuation, and Sensing. Bioessays 2018; 40:e1800118. [DOI: 10.1002/bies.201800118] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/01/2018] [Indexed: 01/02/2023]
Affiliation(s)
- Arnaud Gautier
- PASTEUR, Département de Chimie, École Normale SupérieurePSL University, Sorbonne Université, CNRS75005 ParisFrance
| | - Alison G. Tebo
- PASTEUR, Département de Chimie, École Normale SupérieurePSL University, Sorbonne Université, CNRS75005 ParisFrance
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Zhao J, Stains CI. Identification of a Fragmented Small GTPase Capable of Conditional Effector Binding. RSC Adv 2017; 7:12265-12268. [PMID: 28966788 DOI: 10.1039/c6ra25575b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
A fragmented small GTPase capable of conditional effector binding is described. The effector binding function of this split-GTPase can be modulated using a small molecule input, thus allowing for the potential design of cellular signaling pathways.
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Affiliation(s)
- Jia Zhao
- Department of Chemistry, University of Nebraska - Lincoln, Lincoln, NE 68588, United States
| | - Cliff I Stains
- Department of Chemistry, University of Nebraska - Lincoln, Lincoln, NE 68588, United States
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Xu B, Zhou X, Stains CI. An improved miniprotein host for fluorogenic supramolecular assembly on the surface of living cells. RSC Adv 2016. [DOI: 10.1039/c6ra01215a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
A new host–guest pair produces a significant increase in the brightness of supramolecular complexes on the surface of living cells.
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Affiliation(s)
- Bi Xu
- Department of Chemistry
- University of Nebraska – Lincoln
- Lincoln
- USA
| | - Xinqi Zhou
- Department of Chemistry
- University of Nebraska – Lincoln
- Lincoln
- USA
| | - Cliff I. Stains
- Department of Chemistry
- University of Nebraska – Lincoln
- Lincoln
- USA
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