Abstract
Over the last decade, the use of auxin-inducible degrons (AID) to control the stability of target proteins has revolutionized the field of cell biology. AID-mediated degradation helps to overcome multiple hurdles that have been encountered in studying multisubunit protein complexes, like the nuclear pore complex (NPC), using classical biochemical and genetic methods. We have used the AID system for acute depletion of individual members of the NPC, called nucleoporins, in order to distinguish their roles both within established NPCs and during NPC assembly.
Here, we describe a protocol for CRISPR/Cas9-mediated gene targeting of genes with the AID tag. As an example, we describe a step-by-step protocol for targeting of the NUP153 gene. We also provide recommendations for screening strategies and integration of the sequence encoding the Transport Inhibitor Response 1 (TIR1) protein, a E3-Ubiquitin ligase subunit necessary for AID-dependent protein degradation. In addition, we discuss applications of the NUP-AID system and functional assays for analysis of NUP-AID tagged cell lines.
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Abbreviations
- AID:
-
Auxin-Induced Degron
- GOI:
-
Gene of Interest
- gRNA:
-
guide RNA
- HDR:
-
Homology Directed Repair
- NE:
-
Nuclear Envelope
- NPC:
-
Nuclear Pore Complex
- NUP:
-
Nucleoporin/NPC constituent protein
- NUP-AID:
-
Nucleoporin-AID fusion protein
- POI:
-
Protein of Interest
- TIR1:
-
Transport Inhibitor Response 1 protein/ubiquitin ligase subunit
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Acknowledgments
This work was supported by Intramural Research Program of the Eunice Kennedy Shriver National Institute of Child Health and Human Development at the National Institutes of Health, USA (Intramural Project #Z01 HD008954). We thank Ashley Person, NIH postbaccalaureate fellow, for comments on this manuscript.
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Aksenova, V., Arnaoutov, A., Dasso, M. (2022). Analysis of Nucleoporin Function Using Inducible Degron Techniques. In: Goldberg, M.W. (eds) The Nuclear Pore Complex. Methods in Molecular Biology, vol 2502. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-2337-4_9
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