RNA-editing Cas13 enzymes have taken the CRISPR world by storm. Like RNA interference, these enzymes can knock down RNA without altering the genome, but Cas13s have higher on-target specificity. New work from Konermann et al. and Yan et al. describes new Cas13d enzymes that ...
CRISPR genome editing has made it easier to create knockout alleles in a variety of species, including the standard laboratory mouse. It’s also made targeted insertions relatively simple in C. elegans and bacteria. But CRISPRing typical mouse models, including creating ...
In order to bind DNA, Cas9 and other CRISPR enzymes require a short PAM sequence adjacent to the targeted sequence at the locus of interest. SpCas9’s 3’ NGG PAM occurs frequently in GC-rich genomes, but a PAM is not always available near the locus you’d like to modify. To tackle ...
By mutating one of two Cas9 nuclease domains, researchers created the CRISPR nickase. Nickases create a single-strand rather than a double-strand break, and when used with two adjacent gRNAs, can lower the probability of off-target editing. In this post, we’ll summarize how IDT ...
Blugene and I represented Addgene at the recent Keystone meeting on Precision Genome Editing with Programmable Nucleases. Check out #KSgenome on Twitter if you missed our live updates!
In today’s podcast, we sit down with Wei Leong Chew, a researcher at the Genome Institute of Singapore who recently started his own lab. We discuss some of the joys and difficulties of getting a lab up and running, and learn a little bit about what it was like for Wei Leong to ...
This post was updated on Jul 27, 2020. CRISPR, and specifically Cas9 from S. pyogenes (SpCas9), is truly an exceptional genome engineering tool. It is easy to use, functional in most species, and has many applications. That said, SpCas9 is not the only game in town, and other ...
Cas9 is the genome editing tool of choice for a number of model organisms: mammalian cells, yeast, drosophila, plants, worms, zebrafish, frogs, some bacteria; but not thermophilic (high heat loving) bacteria. Until recently the only available Cas9 proteins were isolated from ...
