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Updated: Aug 23, 2025

Substrate Generation for Endonucleases of CRISPR/Cas Systems
Published on: September 8, 2012
CRISPR-Cas9 Shaped Viral Metagenomes Associated with Bacillus subtilis
Katharina Kohm1, Veronika Theresa Lutz2, Ines Friedrich3
1Institute of Biotechnology, BTU Cottbus-Senftenberg, Senftenberg, Germany.
Abstract:
Phages are viruses of bacteria and have been known for over a century. They do not have a metabolism or protein synthesis machinery and rely on host cells for replication. The model organism Bacillus subtilis has served as a host strain for decades and enabled the isolation of many unique viral strains. However, many viral species representatives remained orphans as no, or only a few, related phages were ever re-isolated.The presented protocol describes how a CRISPR-Cas9 system with an artificial CRISPR-array can be set up and used to discriminate abundant and well-known B. subtilis phage from a host-based metagenome enrichment. The obtained viral suspension can be used for metagenome sequencing and isolating new viral strains.
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