Toward the rational design of fluorescent proteins : elucidating the photodynamics of the GFP chromophore in various environments

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Abstract/Contents

Abstract
The green fluorescent protein (GFP) has revolutionized the fields of chemistry and biology. Due to their ability to highlight protein dynamics in living organisms, GFP and GFP-like proteins have emerged as ubiquitous tools in biological imaging. The versatility of GFP has inspired a rainbow-like palette of fluorescent reporters; however, the creation of novel GFP variants is often imprecise and inefficient. Using molecular dynamics simulations, I unravel the intricate steric and electronic factors responsible for the performance of these fluorescent proteins. Across many systems (i.e., gas phase, water, and GFP/Dronpa2 scaffolds), I study the photodynamics of the GFP chromophore. Changes to the chromophore's intrinsic properties (e.g. fluorescence propensity, photoisomerization quantum yield, etc.) are monitored as the molecule occupies various condensed phase systems. Applying this knowledge, I have developed a computational workflow that can (1) generate structures for tens of thousands of GFP mutants and (2) characterize these mutants using steric and electronic features. This structural data is coupled with machine learning models to identify important interactions within the system and inspire the creation of novel GFP reporters.

Description

Type of resource text
Form electronic resource; remote; computer; online resource
Extent 1 online resource.
Place California
Place [Stanford, California]
Publisher [Stanford University]
Copyright date 2022; ©2022
Publication date 2022; 2022
Issuance monographic
Language English

Creators/Contributors

Author Jones, Chey Marcel
Degree supervisor Martinez, Todd J. (Todd Joseph), 1968-
Thesis advisor Martinez, Todd J. (Todd Joseph), 1968-
Thesis advisor Boxer, Steven G. (Steven George), 1947-
Thesis advisor Markland, Thomas E
Degree committee member Boxer, Steven G. (Steven George), 1947-
Degree committee member Markland, Thomas E
Associated with Stanford University, Department of Chemistry

Subjects

Genre Theses
Genre Text

Bibliographic information

Statement of responsibility Chey Marcel Jones.
Note Submitted to the Department of Chemistry.
Thesis Thesis Ph.D. Stanford University 2022.
Location https://purl.stanford.edu/gy709ry9024

Access conditions

Copyright
© 2022 by Chey Marcel Jones
License
This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).

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