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https://github.com/adamcohenlab/xiang2025mfe

Supporting code for 2025 paper: Mechanism of giant magnetic field effect in a red fluorescent protein

https://github.com/adamcohenlab/xiang2025mfe

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Supporting code for 2025 paper: Mechanism of giant magnetic field effect in a red fluorescent protein

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  • Host: GitHub
  • Owner: adamcohenlab
  • License: mit
  • Language: Mathematica
  • Default Branch: main
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  • Size: 31.3 KB
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Created about 1 year ago · Last pushed about 1 year ago
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README.md

xiang2025mfe

Supporting Code

Mechanism of giant magnetic field effect in a red fluorescent protein

Katherine M. Xiang1, Hana Lampson1, Rebecca Frank Hayward2, Andrew G. York4, Maria Ingaramo4, Adam E. Cohen1,3*

1Department of Physics, Harvard University, Cambridge, MA 02138, USA

2School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA

3Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA

4Calico Life Sciences LLC, South San Francisco, CA 94080, USA

* cohen@chemistry.harvard.edu

Description of files:

MFE_kinetic_model.m : MATLAB script for simulating the kinetic photophysical model of the mScarlet3/FMN/FMNH2 magnetic field effect.

SCRP_spin_sim.m : MATLAB script for simulating spin dynamics. Includes code for simulating a single spin precessing in an arbitrary static magnetic field, and for a non-interacting two-spin system in separate arbitrary static magnetic fields.

SCRP_spin_and_chem_sim.m : MATLAB script for incorporating chemical reactions to the spin simulation, to simulate SCRP separation and recombination. The function spin_chem_sim numerically computes the SCRP time evolution. The function spin_chem_sim_analytical uses the analytical expressions derived in spin_dynamics.nb. These analytical expressions are faster to evaluate numerically but less intuitive to understand compared to the expressions in spin_chem_sim.

spin_dynamics.nb : Mathematica notebook with derivations for the time evolution of $T0$ and $T+$-born SCRPs in arbitrary static magnetic fields, and the corresponding singlet and triplet probabilities as a function of time.

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  • Name: Cohen Lab
  • Login: adamcohenlab
  • Kind: organization
  • Location: Harvard

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