Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Cyclin‐CDK complexes are activated at specific points of the cell cycle. CAK, CDK activating kinase
| CDK | Cyclin | Cell cycle phase activity | |
|---|---|---|---|
| CDK4 | Cyclin D1, D2, D3 | G1 phase | |
| CDK6 | Cyclin D1, D2, D3 | G1 phase | |
| CDK2 | Cyclin E | G1/S phase transition | |
| CDK2 | Cyclin A | S phase | |
| CDK1 | (cdc2) | Cyclin A | G2/M phase transition |
| CDK1 | (cdc2) | Cyclin B | Mitosis |
| CDK7 | Cyclin H | CAK, all cell cycle phases |
