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. 2022 Jan 11;13(10):2857–2876. doi: 10.1039/d1sc06269g

Key features of Class-2 CRISPR-Cas systems and the representative POC sensing platforms summarized in this review.

Type II-Cas9 Type V-Cas12 Type VI-Cas13
Subtypes Deactivated Cas9 (dCas9) Cas12a (Cpf1) Cas13a (C2c2)
Cas9 nickase (nCas9) Cas12b (C2c1) Cas13b
Cas12f (Cas14)
Target (activator) dsDNA dsDNA RNA
ssDNA
gRNA crRNA + tracrRNA crRNA crRNA
Platforms NASBACC48 DETECTR54 SHERLOCK58
CRISDA49 HOLMES43 HUDSON-SHERLOCK44
CRISPR-Chip50 CRISPR-hydrogel69 CARMEN61