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Quantum Enzymology
Orbital Verified Peer Review
8 min read
Quantum Proton Tunneling in CRISPR-Cas9 Cleavage Kinetics
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PUBLISHED: October 12, 2026
DOI: 10.1038/s41586-026-09214-q
TEXT SIZE:
Orbital Transmission Image • Cryo-EM Bay
Resolution: 0.82 Å
Scientific Abstract
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✓ Key Verified Findings
- 01. Hydrogen kinetic isotope effect (KIE) exceeds 4.7, conclusively establishing quantum tunneling as the rate-limiting step in catalytic bond breakage.
- 02. Zero-convection microgravity environments increase molecular spin-state coherence lifetimes to 384 picoseconds.
- 03. Dielectric tuning of the Cas9 catalytic triad using fluorinated unnatural amino acids eradicates off-target human genomic cutting.