|Detection of Human PLK3 by Western Blot. Western blot shows nuclear extracts of HeLa human cervical epithelial carcinoma cell line and K562 human chronic myelogenous leukemia cell line. PVDF membrane was probed with 1 µg/mL of Human PLK3 Antigen Affinity‑purified Polyclonal Antibody (Catalog # AF4197) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF017). A specific band was detected for PLK3 at approximately 72 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.|
Polo-like kinases are critical regulators of cell cycle progression, cytokinesis, mitosis, and the genotoxic stress response. Four distinct members have been identified to date in mammalian cells: PLK1, PLK2, PLK3, and PLK4. PLK3 (polo-like kinase 3) plays an important role in cell cycle regulation by modulating microtubule dynamics and centrosomal function. Although protein levels are unchanged throughout the cell cycle, kinase activity peaks during late S and G2 phases. Many key cell cycle regulators are phosphorylated by PLK3 including p53 on Ser20, Cdc25C on Ser216, and the major subunit of DNA polymerase δ, p125 on Ser60.
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