Preferred Label : Cell Cycle Progression Pathway;
NCIt related terms : Regulation of cell cycle progression by Plk3;
Alternative definition : BIOCARTA: The focus of this pathway is to illustrate the role of Polo-like Kinase
3 (Plk3 also known as Prk and Fnk) as part of the regulatory cascade leading to apoptosis
and the arrest cell cycle progression prior to M phase. Phosphorylation of Cdc25C
on serine-216 causes the arrest of the cell cycle at the G2/M phase border by preventing
Cdc25C from activating cyclinB1/Cdk1. Xie et al. demonstrated that Plk3, like Chk1
and Chk2, also phosphorylates Cdc25C on serine-216 contributing to cell cycle arrest.
Additionally they found that Plk3 also phosphorylates p53 on serine 20, a step that
is stimulatory in the process leading up to p53-mediated apoptosis. Wang Q et al.
found that Plk3 is closely associated with the centrosome and that this is dependent
on the integrity of the microtubules. Expression of constitutively active or defective
Plk3 kinase had significant defects on the shape and nature of the microtubule apparatus
of the cell. In either case cell cycle progression was halted and apoptosis occurred.
(This definition may be outdated - see the DesignNote.);
NCIt note : The BIOCARTA Definition (ALT_DEFINITION) for this pathway concept was provided by
BioCarta. This property was not created by, nor is it maintained by the NCI Thesaurus
staff. Additionally, BioCarta is no longer updating its pathway data; thus, the BIOCARTA
Definition might be outdated or inaccurate. Please see the Terms and Conditions for
Use at http://www.biocarta.com/.;
Biocarta ID : h_plk3Pathway;
Origin ID : C39195;
UMLS CUI : C1516335;
Semantic type(s)
has_gene_product_element
pathway_has_gene_element