Table 1. Estimates of total number of origins by different criteria (estimates from all but first two rows rely on candidate MCM binding sites [CMBSs] from this report).

Criterion	Estimate of number of origins
SGD classification	354 (343 of which map unambiguously)
OriDB classification	829 (410 confirmed, 216 likely, 203 dubious)
Generation of ssDNA in HU	1600
BrdU incorporation	1400
Nucleosome-free regions	5000
Transition from mostly intergenic to mostly genic	6000
Transition from low transcription genic to high transcription genic	5000
ACS motif	6000
GC skew	6000