Research Highlights | Published:

Microbiology

A wealth of anti-CRISPR proteins

Nature volume 534, page 299 (16 June 2016) | Download Citation

Proteins that inhibit the activity of the CRISPR–Cas bacterial defence system could be widespread.

Viruses and other microbes often successfully transfer genes to bacteria, despite the presence of the bacterial CRISPR–Cas system, which recognizes and attacks foreign DNA or RNA. Karen Maxwell and Alan Davidson at the University of Toronto in Canada and their colleagues had previously described nine families of anti-CRISPR protein that help certain viruses to infect Pseudomonas bacteria. Now, using bioinformatics, the team has identified five more anti-CRISPR protein families in a range of microorganisms that inhibit CRISPR–Cas systems in Pseudomonas aeruginosa and Pectobacterium atrosepticum.

Anti-CRISPR proteins could have an important role in gene transfer between bacteria, including the spread of genes involved in antibiotic resistance, the authors say.

About this article

Publication history

Published

DOI

https://doi.org/10.1038/534299b

Authors

    Comments

    By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.

    Newsletter Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing