What question did this study set out to answer?

To elucidate how the dual RNA–guided endonuclease Cas9 mediates site-specific DNA cleavage to protect bacteria from foreign genetic elements.

June 1, 1991Annual Review of Biophysics and Biophysical Chemistry

From Femtoseconds to Biology: Mechanism of Bacteriorhodopsin's Light-Driven Proton Pump

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To elucidate how the dual RNA–guided endonuclease Cas9 mediates site-specific DNA cleavage to protect bacteria from foreign genetic elements.
Characterized CRISPR–Cas endonuclease activity targeting foreign nucleic acids.
Analyzed the dual RNA-guided recognition and cleavage mechanisms mediated by Cas9 against phages and conjugative plasmids.
Cas9 employs dual RNA guides to target and introduce site-specific double-strand breaks in foreign DNA.
Targeted endonuclease cleavage neutralizes invading bacteriophages and halts the transfer of conjugative plasmids.

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Implication

Mechanistic analysis reveals site-specific DNA cleavage by RNA-guided Cas9 in bacteria, indicating targeted defense against invading genetic elements.

Cite This Study

Mathies et al. (1991) studied this question.

synapsesocial.com/papers/6a6fc1b5ac440176ef286b4c https://doi.org/10.1146/annurev.bb.20.060191.002423

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Implication

Mechanistic analysis reveals site-specific DNA cleavage by RNA-guided Cas9 in bacteria, indicating targeted defense against invading genetic elements.

From Femtoseconds to Biology: Mechanism of Bacteriorhodopsin's Light-Driven Proton Pump

Key Points

Discussion

Implication

Cite This Study

From Femtoseconds to Biology: Mechanism of Bacteriorhodopsin's Light-Driven Proton Pump

Key Points

Discussion

Implication

Cite This Study

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