Cyclin A is a member of the Cyclin A family that can bind and activate Cdc2 and Cdk2 and is involved in the control of mitosis and S phase (1). During S phase, cyclin A forms a complex with Cdk2, the pRB-related protein p107 and E2F (2). Additionally, deregulation of cyclin A expression might contribute to tumor formation (3). The cyclin A family consist of two members, cyclin A1 and cyclin A2, to which cyclin A2 promotes both G1/S and G2/M transition (4).
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