A strategy for Cas13 miniaturization based on the structure and AlphaFold.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
08 09 2023
08 09 2023
Historique:
received:
24
01
2023
accepted:
30
08
2023
medline:
11
9
2023
pubmed:
9
9
2023
entrez:
8
9
2023
Statut:
epublish
Résumé
The small size of the Cas nuclease fused with various effector domains enables a broad range of function. Although there are several ways of reducing the size of the Cas nuclease complex, no efficient or generalizable method has been demonstrated to achieve protein miniaturization. In this study, we establish an Interaction, Dynamics and Conservation (IDC) strategy for protein miniaturization and generate five compact variants of Cas13 with full RNA binding and cleavage activity comparable the wild-type enzymes based on a combination of IDC strategy and AlphaFold2. In addition, we construct an RNA base editor, mini-Vx, and a single AAV (adeno-associated virus) carrying a mini-RfxCas13d and crRNA expression cassette, which individually shows efficient conversion rate and RNA-knockdown activity. In summary, these findings highlight a feasible strategy for generating downsized CRISPR/Cas13 systems based on structure predicted by AlphaFold2, enabling targeted degradation of RNAs and RNA editing for basic research and therapeutic applications.
Identifiants
pubmed: 37684268
doi: 10.1038/s41467-023-41320-8
pii: 10.1038/s41467-023-41320-8
pmc: PMC10491665
doi:
Substances chimiques
Endonucleases
EC 3.1.-
RNA
63231-63-0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
5545Informations de copyright
© 2023. Springer Nature Limited.
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