PE5 Prime Editor

Highest-efficiency prime editor architecture combining PE3 dual nicking with MLH1dn mismatch repair inhibition. Typically achieves 50–80% editing rates at optimized sites for all transition, transversion, and small indel edits without double-strand breaks. First choice when maximum prime editing efficiency is the primary design constraint.

Length: 1 bp(0 aa)

Generation: PE5

Characteristics

State-of-the-art prime editing combining PE3 dual nicking with PE4 MMR inhibition. Achieves highest editing rates (often 50-80% at optimized sites). Indel byproducts typically 10-25%. Most complex system requiring pegRNA, ngRNA, and MLH1dn expression.

Architecture: PE3 (dual nicking system) combined with MLH1dn mismatch repair inhibition. Integrates both enhancement strategies for maximum efficiency.

Capabilities: All prime editing capabilities with highest efficiency. Combines benefits of coordinated nicking and MMR evasion. Most powerful prime editing system currently available.

Efficiency features: Maximum efficiency through dual enhancement mechanisms. Requires careful optimization of ngRNA placement and MLH1dn expression levels. Best choice when high efficiency is essential despite system complexity.

References

  1. Anzalone et al. (2019). Search-and-replace genome editing without double-strand breaks or donor DNA. Nature - Anzalone 2019 Prime Editing
  2. Chen et al. (2021). Enhanced prime editing systems by manipulating cellular determinants of editing outcomes. Cell - Chen 2021 PE4 PE5

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