The activation of protein kinase C by the polyphosphoinositides phosphatidylinositol 4,5-diphosphate and phosphatidylinositol 4-monophosphate [PDF]
Protein kinase C(PKC) is a Ca2+‐ and phospholipid‐dependent protein kinase which can be activated by diacylglycerol, a product of polyphosphoinositide hydrolysis. In this report, we show that the polyphosphoinositides L‐α‐phosphatidylinositol 4‐monophosphate (PI 4P) and L‐α‐phosphatidylinositol 4,5‐diphosphate (PI 4,5DP) can serve as phospholipid ...
O'Brian, Catherine A. +2 more
exaly +3 more sources
Actin filament assembly by myristoylated alanine-rich C kinase substrate-phosphatidylinositol-4,5-diphosphate signaling is critical for dendrite branching. [PDF]
Dendrites undergo extensive growth and branching at early stages, but relatively little is known about the molecular mechanisms underlying these processes. Here, we show that increasing the level of myristoylated, alanine-rich C kinase substrate (MARCKS), a prominent substrate of protein kinase C and a phosphatidylinositol-4,5-diphosphate [PI(4,5)P2 ...
Li H, Chen G, Zhou B, Duan S.
europepmc +4 more sources
The metabolism of phosphatidylinositol (PtdIns) was studied in a mink lung epithelial cell line and its subclones transformed by feline sarcoma viruses containing either the v-fms or v-fes oncogenes. The transformed cell lines had a higher rate of PtdIns turnover but did not have elevated levels of phosphorylated PtdIns species or PtdIns kinase ...
S, Jackowski +3 more
exaly +3 more sources
Membrane association of the PTEN tumor suppressor: molecular details of the protein-membrane complex from SPR binding studies and neutron reflection. [PDF]
The structure and function of the PTEN phosphatase is investigated by studying its membrane affinity and localization on in-plane fluid, thermally disordered synthetic membrane models.
Siddharth Shenoy +6 more
doaj +1 more source
CDP-Diacylglycerol Synthases (CDS): Gateway to Phosphatidylinositol and Cardiolipin Synthesis
Cytidine diphosphate diacylglycerol (CDP-DAG) is a key intermediate in the synthesis of phosphatidylinositol (PI) and cardiolipin (CL). Both PI and CL have highly specialized roles in cells.
Nicholas J. Blunsom, Shamshad Cockcroft
doaj +1 more source
Localization of the ATP/Phosphatidylinositol 4,5 Diphosphate-binding Site to a 39-Amino Acid Region of the Carboxyl Terminus of the ATP-regulated K+ Channel Kir1.1 [PDF]
Intracellular ATP and membrane-associated phosphatidylinositol phospholipids, like PIP(2) (PI(4,5)P(2)), regulate the activity of ATP-sensitive K(+) (K(ATP)) and Kir1.1 channels by direct interaction with the pore-forming subunits of these channels. We previously demonstrated direct binding of TNP-ATP (2',3'-O-(2,4,6-trinitrophenylcyclo-hexadienylidene)
Ke, Dong +3 more
openaire +2 more sources
When fat is not bad: the regulation of actin dynamics by phospholipid signaling molecules
The actin cytoskeleton plays a key role in the plant morphogenesis and is involved in polar cell growth, movement of subcellular organelles, cell division, and plant defense.
Roman ePleskot +3 more
doaj +1 more source
Addition of platelet-activating factor (PAF) to cells doubly labeled with [14C]glycerol plus [3H]arachidonic acid resulted in a transient decrease of [14C]glycerol-labeled phosphatidylinositol (PI) and a transient increase of [14C]glycerol-labeled ...
T Okayasu, K Hasegawa, T Ishibashi
doaj +1 more source
Diabetes mellitus (DM) represents a problem for the healthcare system worldwide. DM has very serious complications such as blindness, kidney failure, and cardiovascular disease.
Mohamed E. Elangeeb +11 more
doaj +1 more source
Distinct impact of PI(4)P flux on PI(4,5)P<sub>2</sub> steady states and oscillations. [PDF]
Xǔ XJ, Tong CS, Wu M.
europepmc +1 more source

