bioRxiv preprint doi: https://doi.org/10.1101/182634; this version posted August 30, 2017. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. A Mathematical Model of the Phosphoinositide Pathway Daniel V Olivença1,*, Inna Uliyakina1 , Luis L Fonseca2, Margarida D Amaral1, Eberhard Voit2, Francisco R Pinto1 1University of Lisbon, Faculty of Sciences, BIOISI: Biosystems and Integrative Sciences Institute. Campo Grande 1749-016 Lisbon, Portugal 2The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, 950 Atlantic Drive, Atlanta, Georgia, 30332-2000, USA * Corresponding Author Contacts Tel: +351 21 750 0000 (ext. 28232); Fax: +351 21 7500088; Email:
[email protected] Keywords Phosphoinositides, PI(4,5)P2, Mathematical model, Biochemical systems theory, Epithelial sodium channel. Abbreviations AKT – Protein Kinase B, a serine/threonine-specific protein kinase ASL – Airway surface liquid BST - Biochemical systems theory CF – Cystic fibrosis DAG – Diacylglycerol ENaC – Epithelial Sodium Channel ER - Endoplasmic Reticulum GMA - Generalized mass action INPP5 - Inositol polyphosphate 5-phosphatases IP3 – Inositol triphosphate LTPs - lipid transport proteins MCSs - membrane contact sites MDCK cells - Madin-Darby Canine Kidney Epithelial Cells MTM - Myotubularin OCRL - Lowe Oculocerebrorenal Syndrome Protein; OCRL is an INPP5 ODE - Ordinary differential equations PI – Phosphatidylinositol