Oregon Health & Science University
Introduction: Microorganisms are vulnerable to invasion by mobile genetic elements such as viruses, plasmids and transposons. The recently discovered CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats)-associated system (CRISPR-Cas) is an adaptive immunity system found in most archaea and many bacteria that targets and inactivates invading foreign genetic elements. Cells with CRISPR-Cas are more likely to resist the invasion and uptake of foreign DNA such as viruses, plasmids and transposons. Several CRISPR-Cas systems have been identified in prokaryotes, including CRISPR1-cas and CRISPR3-cas in E. faecalis isolates recovered from human, animal, insect and environmental sources. The aims of this study were to: (1) compare the occurrence of CRISPR-cas in collections of endodontic (n=34), oral (n=21), and multidrug-resistant hospital-acquired strains of E. faecalis (n=23); (2) evaluate the distribution of antibiotic resistance and virulence traits amongst strains without C
School of Dentistry
Burley, Katie M., "CRISPR-cas, a prokaryotic adaptive immune system, in endodontic, oral, and multidrug-resistant hospital acquired Enterococcus faecalis" (2013). Scholar Archive. 865.