PathwayStep4560 PathwayStep4528 PathwayStep4515 G1/S Transition G1 Phase Mitotic G1-G1/S phases Edited: Matthews, L, 2010-01-19 Reactome Database ID Release 43453279 Reactome, http://www.reactome.org ReactomeREACT_21267 Reviewed: Grana, X, 2011-06-15 Reviewed: MacPherson, D, 2011-08-25 Reviewed: Manfredi, J, 0000-00-00 00:00:00 G0 and Early G1