Table 1. Correlation of U1 gene silencing efficiency to genomic locus and copy numbers of DiCre.

Target	Recipient	DiCre locus	DiCre copies	Recombination Efficiency [%]
gfp	RH BloxP DiCre*	random	multiple	97.5 ± 1.6
chc1	ku80::diCre *	ku80/chrXI	single	25.4 ± 2.1
chc1	Δku80-DHFR**	chc1 3’UTR/chrIX	single	n/a #
drpC	ku80::diCre *	ku80/chrXI	single	10.5 ± 0.8
vps26	Δku80-DHFR**	vps263’UTR/chrVIIb	single	12.6 ± 5.3
drpC	DiCreΔku80	random	multiple	98.5 ± 0.4
drpC	DiCreΔku80::YFP flox -KRed	random	multiple	98.3 ± 0.6

Chr, Chromosome;

*,[7];

**, [8];

^#, Stable integration was not achieved in five independent transfections.