CRISPR 101: Cytosine and Adenine Base Editors
Type
Blog Post
Published
Feb. 13, 2025, 2:15 p.m.
...as a template. To do so, they used a Cas nickase, instead of dCas9. The resulting editor, BE3, nicks the...editing requires three elements. They are, broadly:
A Cas protein (catalytically dead or nickase) fused to ...a deaminase that makes the edit
A gRNA targeting Cas to a specific locus
A target base for editing within...within the editing window specified by the Cas protein
These elements were the starting point towards ...evolution of an adenine base editor with improved Cas domain compatibility and activity. Nature Biotechnology...individual Cas9. They also mutagenized the cytidine deaminase portion of the base editor to create SpCas9 base..., a base editor containing high fidelity Cas9 variant HF-Cas9 (Rees et al., 2017). HF-BE3 showed 37-fold...