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Updated: Jun 4, 2026

Principles of Site-Specific Recombinase (SSR) Technology
Published on: May 29, 2008
VCre/VloxP and SCre/SloxP: new site-specific recombination systems for genome engineering
Emiko Suzuki1, Manabu Nakayama
1Department of Human Genome Research, Kazusa DNA Research Institute, Graduate School of Pharmaceutical Sciences, Chiba University, 2-6-7 Kazusa-Kamatari, Kisarazu, Chiba 292-0818, Japan.
Abstract:
We developed two new site-specific recombination systems named VCre/VloxP and SCre/SloxP for genome engineering. Their recognition sites are different from Cre recognition sites because VCre and SCre recombinases share less protein similarity with Cre, even though the basic 13-8-13 structures of their recognition sites are identical. Mutant VloxP and SloxP, which have the same uses as mutant loxP, were also developed. VCre/VloxP and SCre/SloxP in combination with Cre/loxP and Flp/FRT systems can serve as powerful tools for genome engineering, especially when used to genetically modify both alleles of a single gene in mouse and human cells.
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