Multiple steps of the atypical cell cycles underlying Plasmodium gametogony are controlled by a divergent cyclin/cyclin-dependent complex.

Cyclin-dependent kinase 5 regulates the circadian clock involving phosphorylation of the PER2 protein.

The polarized orientation of the mitotic spindle in budding yeast arises from spindle pole structural and functional asymmetry subject to cell cycle control.

CDKG1 is a D-cyclin dependent retinoblastoma related protein kinase whose abundance scales with cell size and controls cell division cycle number during multiple fission.

A new tumor suppressor function of p21, needed at each undamaged duplication cycle, ensures the adequate execution of the DNA replication program thereby protecting the genome integrity.

The phosphatase Fcp1 inactivates Greatwall kinase at the end of mitosis.

CDPK4 is a pleiotropic regulator controlling initiation of DNA replication, mitotic spindle assembly and flagellar activation during the early stages of Plasmodium transmission.

Ablation of the Cdkn1c cell cycle inhibitor leads to defective muscle stem cell dynamics and myogenic potential, while progressive cytoplasmic to nuclear cellular localization of the Cdkn1c protein regulates growth arrest.

Reconstructing ancestral enzymes has revealed that a switch in kinase substrate preference evolved via an expanded specificity intermediate that is tolerated in vivo, thus providing a path for kinase diversification.

Cyclin-dependentkinase 2 (Cdk2), the master regulator of S phase events during the cell cycle, controls the earliest step in the motile ciliogenesis pathway in quiescent multiciliatedairway epithelial cells.