The widespread IS200/IS605 transposon family encodes diverse programmable RNA-guided endonucleases
- Howard Hughes Medical Institute, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.; Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.; McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.; Department of Brain and Cognitive Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.; Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
- Department of Land Resources and Environmental Sciences, Montana State University, Bozeman, MT 59717, USA.; Thermal Biology Institute, Montana State University, Bozeman, MT 59717, USA.; Center for Biofilm Engineering, Montana State University, Bozeman, MT 59717, USA.
- Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT 59717, USA.
- Department of Land Resources and Environmental Sciences, Montana State University, Bozeman, MT 59717, USA.; Thermal Biology Institute, Montana State University, Bozeman, MT 59717, USA.
- National Center for Biotechnology Information, National Library of Medicine, Bethesda, MD 20894, USA.
Tracing the origin of CRISPR-Cas
CRISPR-Cas systems have transformed genome editing and other biotechnologies; however, the broader origins and diversity of RNA-guided nucleases have largely remained unexplored. Altae-Tranet al. show that three distinct transposon-encoded proteins, IscB, IsrB, and TnpB, are naturally occurring, reprogrammable RNA-guided DNA nucleases (see the Perspective by Rousset and Sorek). In addition to identifying diverse guide-encoding mechanisms, the authors elucidate the evolutionary relationship between IsrB, IscB, and CRISPR-Cas9. Overall, these newly characterized systems, called OMEGA (for obligate mobile element–guided activity) systems, are found in all domains of life and may be harnessed for biotechnology development. —DJ
- Research Organization:
- USDOE Joint Genome Institute (JGI), Walnut Creek, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1982955
- Journal Information:
- Science, Journal Name: Science Journal Issue: 6563 Vol. 374; ISSN 0036-8075
- Publisher:
- AAAS
- Country of Publication:
- United States
- Language:
- English
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