Phospho-PLK4 Blocking Peptide for STJ506388 is synthetically produced from the 300-350 sequence and is suitable for use in western blot applications.
Applications
Immunodepletion/Immunocompetition
Note
STRICTLY FOR FURTHER SCIENTIFIC RESEARCH USE ONLY (RUO). MUST NOT TO BE USED IN DIAGNOSTIC OR THERAPEUTIC APPLICATIONS.
Product Properties
Formulation
Liquid form at 2.5mg/ml concentration in PBS. Up to 5% DMSO can be added. Orders with >1mg can be supplied in lyophilized powder form, or in buffer of choice.
Storage Instruction
Store at-20°C for long term storage. Avoid freeze-thaw cycles.
This blocking peptide is recommended for use in combination with PLK4 antibody, STJ506388
Additional Info
Post Translational Modifications
Acetylation by KAT2A and KAT2B impairs kinase activity by shifting the kinase to an inactive conformation. Ubiquitinated.leading to its degradation by the proteasome. Deubiquitinated by USP54.leading to PLK4 stabilization. Tyrosine-phosphorylated by TEC.
Function
Serine/threonine-protein kinase that plays a central role in centriole duplication. Able to trigger procentriole formation on the surface of the parental centriole cylinder, leading to the recruitment of centriole biogenesis proteins such as SASS6, CENPJ/CPAP, CCP110, CEP135 and gamma-tubulin. When overexpressed, it is able to induce centrosome amplification through the simultaneous generation of multiple procentrioles adjoining each parental centriole during S phase. Phosphorylates 'Ser-151' of FBXW5 during the G1/S transition, leading to inhibit FBXW5 ability to ubiquitinate SASS6. Its central role in centriole replication suggests a possible role in tumorigenesis, centrosome aberrations being frequently observed in tumors. Also involved in deuterosome-mediated centriole amplification in multiciliated that can generate more than 100 centrioles. Also involved in trophoblast differentiation by phosphorylating HAND1, leading to disrupt the interaction between HAND1 and MDFIC and activate HAND1. Phosphorylates CDC25C and CHEK2. Required for the recruitment of STIL to the centriole and for STIL-mediated centriole amplification. Phosphorylates CEP131 at 'Ser-78' and PCM1 at 'Ser-372' which is essential for proper organization and integrity of centriolar satellites.
CytoplasmCytoskeletonMicrotubule Organizing CenterCentrosomeCentrioleNucleusNucleolusCleavage FurrowComponent Of The DeuterosomeA Structure That Promotes De Novo Centriole Amplification In Multiciliated Cells That Can Generate More Than 100 CentriolesAssociates With Centrioles Throughout The Cell CycleIt Is Not Present At Cleavage Furrows
