CRISPR 101: Anti-CRISPR Proteins Switch Off CRISPR-Cas Systems
Type
Blog Post
...inhibiting crRNA loading, inhibiting DNA binding, or inhibiting DNA cleavage.
Five ways to anti-CRISPR...Bondy-Denomy J, Corn JE, Doudna JA (2017) Disabling Cas9 by an anti-CRISPR DNA mimic. Sci Adv 3:e1701620...proteins can also be used to prevent dCas9 tethering to DNA.
Since these early anti-CRISPR studies, scientists...block CRISPR activity one of three ways:
Inhibit DNA binding Example: AcrIIA4 blocks Cas9’s interaction...crRNA-Cas complex (Zhu et al., 2019).
Inhibiting DNA cleavage Example: AcrIIC1 binds to the HNH endonuclease...endonuclease domain of Cas9 and prevents target DNA cleavage (Harrington et al., 2017).
Figure 1: Anti-CRISPR...CRISPR
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