Extended Data Figure 1. Coomassie stained SDS-PAGE analysis of multisubunit complexes required for DNA replication.
a, Annotation of the polyacrylamide gels in Figs. 1a in which individual protein subunits have been labelled. b, Analysis of A-Cdk2. The protein complex consists of human Cdk2 and the bovine cyclin A-3 fragment32.