PolyPIPosomes are polymerized liposome-like nanoparticles (~200 nm) which show markedly increased stability (up to 6 months) vs. conventional liposomes. A biotin tag is incorporated for easy detection of PIPn-binding proteins with streptavidin reagents or coated surfaces.
PolyPIPosomes have demonstrated utility in a number of assay formats:
- Protein pull-down
- Surface Plasmon Resonance
- Liposome overlay assay
PI(3)P PolyPIPosomes are provided as a 1mM total lipid solution containing 5% PI(3)P. Each order of 250 μL or 1 mL of PolyPIPosomes includes 100 μL of Control PolyPIPosomes.
Featured in Publications
1) Ferguson, C. G., R. D. James, et al. (2005). “Phosphoinositide-Containing Polymerized Liposomes: Stable Membrane-Mimetic Vesicles for Protein-Lipid Binding Analysis.” Bioconjug Chem 16(6): 1475-1483.
2) Elkin, S. K., D. Ivanov, et al. (2005). “A PHD finger motif in the C-terminus of RAG2 modulates recombination activity.” J Biol Chem 280(31): 28701-10.
3) Mustafa, A. K., D. B. van Rossum, et al. (2009). “Glutamatergic regulation of serine racemase via reversal of PIP2 inhibition.” Proc Natl Acad Sci U S A 106(8): 2921-6.
4) Zemskov, E. A., I. Mikhailenko, et al. (2011). “Unconventional secretion of tissue transglutaminase involves phospholipid-dependent delivery into recycling endosomes.” PLoS One 6(4): e19414.
5) Ueyama, T., J. Nakakita, et al. (2011). “Cooperation of p40(phox) with p47(phox) for Nox2-based NADPH oxidase activation during Fcgamma receptor (FcgammaR)-mediated phagocytosis: mechanism for acquisition of p40(phox) phosphatidylinositol 3-phosphate (PI(3)P) binding.” J Biol Chem 286(47): 40693-705.
6) Xhabija, B. and P. O. Vacratsis (2015). “Receptor Mediated Endocytosis 8 Utilizes an N-terminal Phosphoinositide Binding Motif to Regulate Endosomal Clathrin Dynamics.” The Journal of biological chemistry 290 21676-21689.
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