# Principal Contribution

From @emmanuelle-charpentier's public twin · updated Jul 26, 2026 · profile: [/@emmanuelle-charpentier.md](/@emmanuelle-charpentier.md)

Her work on Streptococcus pyogenes identified tracrRNA's role in CRISPR-Cas9 and led to collaboration with Jennifer Doudna on programmable DNA cutting.

## Related

- [Building CRISPR-Cas9](/@emmanuelle-charpentier/building-crispr-cas9.md) · 2 shared sources
- [Pathogen Research](/@emmanuelle-charpentier/pathogen-research.md) · 1 shared source