ArticleThe Journal of biological chemistry2012
Phosphatidylinositol-4-phosphate 5-kinase isoforms exhibit acyl chain selectivity for both substrate and lipid activator.
Article in The Journal of biological chemistry, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
35 citing papers in PubMed, 68 citations in OpenAlex.
- LPLAT11/MBOAT7-driven phosphatidylinositol remodeling ensures radial glial cell integrity in developing neocortex.iScience · 2026Article
- Implicates of PIP5K1α in asthma-related biological processes: insights into mechanisms and therapeutic potential.Journal of translational medicine · 2025Review
- The LCLAT1/LYCAT acyltransferase is required for EGF-mediated phosphatidylinositol-3,4,5-trisphosphate generation and Akt signaling.Molecular biology of the cell · 2024Article
- Reconstitution of ORP-mediated lipid exchange coupled to PI4P metabolism.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- PIP2 regulating calcium signal modulates actin cytoskeleton-dependent cytoadherence and cytolytic capacity in the protozoan parasite Trichomonas vaginalis.PLoS pathogens · 2023Article
- Triggered Golgi membrane enrichment promotes PtdIns(4,5)P2 generation for plasma membrane repair.The Journal of cell biology · 2023Article
- Reconstitution of ORP-mediated lipid exchange process coupled to PI(4)P metabolism.bioRxiv : the preprint server for biology · 2023Article
- A phosphatidylinositol phosphate kinase inhibits Ras activation and regulates chemorepulsion in Dictyostelium discoideum.Journal of cell science · 2023Article
- Phosphoinositide acyl chain saturation drives CD8Nature immunology · 2023Article
- Genome-Wide Identification of G Protein-Coupled Receptors in Ciliated Eukaryotes.International journal of molecular sciences · 2023Article
- Rational Design and Synthesis of D-galactosyl Lysophospholipids as Selective Substrates and non-ATP-competitive Inhibitors of Phosphatidylinositol Phosphate Kinases.Chemistry (Weinheim an der Bergstrasse, Germany) · 2023Article
- Metabolic routing maintains the unique fatty acid composition of phosphoinositides.EMBO reports · 2022Article
- Polyunsaturated Fatty Acid-Enriched Lipid Fingerprint of Glioblastoma Proliferative Regions Is Differentially Regulated According to Glioblastoma Molecular Subtype.International journal of molecular sciences · 2022Article
- First insights into the honey bee (Journal of advanced research · 2022Article
- Role of pirfenidone in TGF-β pathways and other inflammatory pathways in acute respiratory syndrome coronavirus 2 (SARS-Cov-2) infection: a theoretical perspective.Pharmacological reports : PR · 2021Review
- Plasma membrane phosphatidylinositol (4,5)-bisphosphate promotes Weibel-Palade body exocytosis.Life science alliance · 2020Article
- Type I Phosphatidylinositol-4-Phosphate 5-Kinases α and γ Play a Key Role in Targeting HIV-1 Pr55Journal of virology · 2020Article
- Membrane characteristics tune activities of endosomal and autophagic human VPS34 complexes.eLife · 2020Article
- Article
- Plasma membrane processes are differentially regulated by type I phosphatidylinositol phosphate 5-kinases and RASSF4.Journal of cell science · 2020Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 3 institutions in 2 countries.
Funding
Abstract
Phosphatidylinositol 4,5-bisphosphate is mostly produced in the cell by phosphatidylinositol-4-phosphate 5-kinases (PIP5K) and has a crucial role in numerous signaling events. Here we demonstrate that in vitro all three isoforms of PIP5K, α, β, and γ, discriminate among substrates with different acyl chains for both the substrates phosphatidylinositol 4-phosphate (PtdIns4P) and phosphatidylinositol (PtdIns) although to different extents, with isoform γ being the most selective. Fully saturated dipalmitoyl-PtdIns4P was a poor substrate for all three isoforms, but both the 1-stearoyl-2-arachidonoyl and the 1-stearoyl-2-oleoyl forms of PtdIns4P were good substrates. V(max) was greater for the 1-stearoyl-2-arachidonoyl form compared with the 1-stearoyl-2-oleoyl form, although for PIP5Kβ the difference was small. For the α and γ isoforms, K(m) was much lower for 1-stearoyl-2-oleoyl PtdIns4P, making this lipid the better substrate of the two under most conditions. Activation of PIP5K by phosphatidic acid is also acyl chain-dependent. Species of phosphatidic acid with two unsaturated acyl chains are much better activators of PIP5K than those containing one saturated and one unsaturated acyl chain. PtdIns is a poor substrate for PIP5K, but it also shows acyl chain selectivity. Curiously, there is no acyl chain discrimination among species of phosphatidic acid in the activation of the phosphorylation of PtdIns. Together, our findings indicate that PIP5K isoforms α, β, and γ act selectively on substrates and activators with different acyl chains. This could be a tightly regulated mechanism of producing physiologically active unsaturated phosphatidylinositol 4,5-bisphosphate species in the cell.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.