Epigallocatechin gallate (EGCG) inhibits type II phosphatidylinositol 4-kinases: A key component in pathways of phosphoinositide turnover

2011 ◽  
Vol 516 (1) ◽  
pp. 45-51 ◽  
Author(s):  
Ranjeet K. Sinha ◽  
Ronak Y. Patel ◽  
Naveen Bojjireddy ◽  
Anindya Datta ◽  
Gosukonda Subrahmanyam
2014 ◽  
Vol 1838 (3) ◽  
pp. 1003-1009 ◽  
Author(s):  
Thiago Lemos ◽  
Karine S. Verdoorn ◽  
Luciana Nogaroli ◽  
Thiago Britto-Borges ◽  
Thaís A. Bonilha ◽  
...  

2002 ◽  
Vol 115 (8) ◽  
pp. 1769-1775 ◽  
Author(s):  
Petra de Graaf ◽  
Elsa E. Klapisz ◽  
Thomas K. F. Schulz ◽  
Alfons F. M. Cremers ◽  
Arie J. Verkleij ◽  
...  

Whereas most phosphatidylinositol 4-kinase (PtdIns 4-kinase) activity is localized in the cytoplasm, PtdIns 4-kinase activity has also been detected in membranedepleted nuclei of rat liver and mouse NIH 3T3 cells. Here we have characterized the PtdIns 4-kinase that is present in nuclei from NIH 3T3 cells. Both type II and type III PtdIns 4-kinase activity were observed in the detergent-insoluble fraction of NIH 3T3 cells. Dissection of this fraction into cytoplasmic actin filaments and nuclear lamina-pore complexes revealed that the actin filament fraction contains solely type II PtdIns 4-kinase,whereas lamina-pore complexes contain type III PtdIns 4-kinase activity. Using specific antibodies, the nuclear PtdIns 4-kinase was identified as PtdIns 4-kinase β. Inhibition of nuclear export by leptomycin B resulted in an accumulation of PtdIns 4-kinase β in the nucleus. These data demonstrate that PtdIns 4-kinase β is present in the nuclei of NIH 3T3 fibroblasts,suggesting a specific function for this kinase in nuclear processes.


1991 ◽  
Vol 273 (1) ◽  
pp. 63-66 ◽  
Author(s):  
G C Endemann ◽  
A Graziani ◽  
L C Cantley

A monoclonal antibody has been developed against the type II PtdIns 4-kinase from bovine brain. This antibody, 4C5G, causes greater than 90% inhibition of the type II PtdIns 4-kinase from bovine brain, rat brain and human erythrocytes. However, it fails to inhibit type III PtdIns 4-kinase from bovine brain or PtdIns 3-kinase from rat liver. These results suggest that type II and type III PtdIns 4-kinases are distinct gene products, and that 4C5G will be useful in studying the function of the type II PtdIns 4-kinase.


2007 ◽  
Vol 9 (10) ◽  
pp. 2381-2390 ◽  
Author(s):  
Javier Pizarro-Cerdá ◽  
Bernard Payrastre ◽  
Ying-Jie Wang ◽  
Esteban Veiga ◽  
Helen L. Yin ◽  
...  

2003 ◽  
Vol 100 (7) ◽  
pp. 3995-4000 ◽  
Author(s):  
J. Guo ◽  
M. R. Wenk ◽  
L. Pellegrini ◽  
F. Onofri ◽  
F. Benfenati ◽  
...  

2018 ◽  
Vol 32 (3) ◽  
pp. 230-235 ◽  
Author(s):  
Kristyn C. Cantarutti ◽  
Jason Burgess ◽  
Julie A. Brill ◽  
Jeffrey S. Dason

2014 ◽  
Vol 393 (1-2) ◽  
pp. 9-15 ◽  
Author(s):  
Naveen Bojjireddy ◽  
Ranjeet Kumar Sinha ◽  
Gosukonda Subrahmanyam

1998 ◽  
Vol 273 (36) ◽  
pp. 23126-23133 ◽  
Author(s):  
Kiyotaka Nishikawa ◽  
Alex Toker ◽  
Karen Wong ◽  
Paola A. Marignani ◽  
Franz-Josef Johannes ◽  
...  

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