Variant Chrmine Proteins Having Accelerated Kinetics and/or Red-Shifted Spectra
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United States of America
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Issued Date -
Apr 10, 2025
app pub date -
Jan 23, 2023
filing date -
Jan 23, 2023
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Abstract
Provided is a high-speed variant ChRmine protein having faster kinetic properties compared to a parent ChRmine protein, where the high-speed variant ChRmine protein has one or more amino acid substitutions compared to the parent ChRmine protein. Also provided is a red-shifted variant ChRmine protein having a red-shifted spectrum compared to a parent ChRmine protein, where the red-shifted variant ChRmine protein has one or more amino acid substitutions compared to the parent ChRmine protein. Further provided is a nucleic acid encoding for a variant ChRmine protein disclosed herein as well as a genetically modified cell comprising such nucleic acid. Additionally, provided is an optogenetic method that includes genetically modifying a subject to express in the subject's brain cells a variant ChRmine protein disclosed herein, applying stimulating light to the subject's brain, and imaging the subject's brain.
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