CRISPR Cas9 explained. CRISPR (clustered regularly interspaced short palindromic repeats) are segments of prokaryotic DNA containing short repetitions of base sequences. is an RNA-guided gene-editing platform that makes use of a bacterially derived protein (Cas9) and a synthetic guide RNA to introduce a double strand break at a specific location within the genome.
Cas9 is an enzyme that snips DNA, and CRISPR is a collection of DNA sequences that tells Cas9 exactly where to snip.
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New research reported from the lab of Markita Landry announces scientists could make genetically engineering any type of plant—in particular, gene editing with CRISPR-Cas9—simple and quick. To deliver a gene, the researchers grafted it onto a carbon nanotube, which is tiny enough to slip easily through a plant’s tough cell wall. To date, most genetic engineering of plants is done by firing genes into the tissue—a process known as biolistics—or delivering genes via bacteria. Both are successful only a small percentage of the time, which is a major limitation for scientists seeking to create disease - or drought-resistant crops or to engineer plants so they’re more easily converted to biofuels.


In this engaging article, meet Markita Landry, Assistant Professor of Chemical and Biomolecular Engineering, who runs the Landry Lab at UC Berkeley. Her lab works on developing nanomaterials to assist in the delivery of CRISPR-Cas9 systems in plants.