The cell cycle consists of four distinct phases: G1 phase, S phase, G2 phase and M phase. Antibodies to two key classes of regulatory molecules, cyclins and cyclin-dependent kinases (CDKs) along with Cell Cycle inhibitors (tumor suppressors) such as p21 and p27 are available. Cell cycle checkpoint antibodies (checkpoints are made up of composites of protein kinases and adaptor proteins) are also offered.
