Results 21 to 30 of about 13,924 (256)

An emerging role for PI5P in T cell biology

Frontiers in Immunology, 2013
Phosphoinositides are critical regulators in cell biology. Phosphatidylinositol 4,5-bisphosphate, also known as PI(4,5)P2 or PIP2, was the first variety of phosphoinositide to enter in the T cell signaling scene.
Jacques A Nunes, Jacques A Nunes, Jacques A Nunes, Jacques A Nunes, Geoffrey eGuittard   +4 more
doaj   +1 more source

Allosteric enhancement of ORP1-mediated cholesterol transport by PI(4,5)P2/PI(3,4)P2

Nature Communications, 2019
Phosphatidylinositol phosphates (PIPs) and cholesterol are known to regulate the function of late endosomes and lysosomes (LELs). Here authors unveil a mechanism by which PI(4,5)P2/PI(3,4)P2 allosterically enhances ORP1-mediated cholesterol exit from ...
Jiangqing Dong, Ximing Du, Huan Wang, Jue Wang, Chang Lu, Xiang Chen, Zhiwen Zhu, Zhipu Luo, Li Yu, Andrew J. Brown, Hongyuan Yang, Jia-Wei Wu   +11 more
doaj   +1 more source

Evidence for a specific phosphatidylinositol 4-phosphate phosphatase in human erythrocyte membranes.

Journal of Lipid Research, 1984
Human erythrocyte membranes exhibit a specific phosphatidylinositol 4-phosphate phosphohydrolase (PtdIns4P phosphatase) activity which hydrolyzes PtdIns4P and lysoPtdIns4P but not phosphatidylinositol 4,5-bisphosphate (PtdIns(4,5)P2) or lysoPtdIns(4,5)P2.
S E Mack, F B Palmer
doaj   +1 more source

Structural analyses of the Slm1-PH domain demonstrate ligand binding in the non-canonical site. [PDF]

PLoS ONE, 2012
BACKGROUND: Pleckstrin homology (PH) domains are common membrane-targeting modules and their best characterized ligands are a set of important signaling lipids that include phosphatidylinositol phosphates (PtdInsPs). PH domains recognize PtdInsPs through
Kanchan Anand, Kenji Maeda, Anne-Claude Gavin   +2 more
doaj   +1 more source

Multiple Inositol Polyphosphate Phosphatase Compartmentalization Separates Inositol Phosphate Metabolism from Inositol Lipid Signaling

Biomolecules, 2023
Multiple inositol polyphosphate phosphatase (MINPP1) is an enigmatic enzyme that is responsible for the metabolism of inositol hexakisphosphate (InsP6) and inositol 1,3,4,5,6 pentakisphosphate (Ins(1,3,4,5,6)P5 in mammalian cells, despite being ...
Jia Yu, Barbara Leibiger, Shao-Nian Yang, Stephen B. Shears, Ingo B. Leibiger, Per-Olof Berggren, Christopher J. Barker   +6 more
doaj   +1 more source

The analysis of tissue phospholipids: hydrolysis procedure and results with pig liver

Journal of Lipid Research, 1960
A procedure for the hydrolysis of phospholipids is described. The effect of alkali concentration, organic solvents, and length of hydrolysis have been studied. The initial reaction in the preferred solvent system appears to be a methanolysis.
G. Hübscher, J.N. Hawthorne, P. Kemp
doaj   +1 more source

Finding a needle in a haystack: the role of electrostatics in target lipid recognition by PH domains. [PDF]

PLoS Computational Biology, 2012
Interactions between protein domains and lipid molecules play key roles in controlling cell membrane signalling and trafficking. The pleckstrin homology (PH) domain is one of the most widespread, binding specifically to phosphatidylinositol phosphates ...
Craig N Lumb, Mark S P Sansom
doaj   +1 more source

HD-PTP is a catalytically inactive tyrosine phosphatase due to a conserved divergence in its phosphatase domain. [PDF]

PLoS ONE, 2009
The HD-PTP protein has been described as a tumor suppressor candidate and based on its amino acid sequence, categorized as a classical non-transmembrane protein tyrosine phosphatase (PTP).
Marie-Claude Gingras, Yu Ling Zhang, Dmitri Kharitidi, Alastair J Barr, Stefan Knapp, Michel L Tremblay, Arnim Pause   +6 more
doaj   +1 more source

Essential lipid autacoids rewire mitochondrial energy efficiency in metabolic dysfunction‐associated fatty liver disease

Hepatology, EarlyView., 2022
Increased liver content of DHA‐derived small lipid autacoids (i.e resolvin D1 and maresin 1) associates with enhanced mitochondrial oxidative phosphorylation, fatty acid β‐oxidation and bioenergetic metabolic flux. These features provide hepatic protection from steatotic, pro‐inflammatory and fibrogenic insults.
Cristina López‐Vicario, David Sebastián, Mireia Casulleras, Marta Duran‐Güell, Roger Flores‐Costa, Ferran Aguilar, Juan José Lozano, Ingrid W. Zhang, Esther Titos, Jing X. Kang, Antonio Zorzano, Makoto Arita, Joan Clària   +12 more
wiley   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source