Main description:

To produce energy, aerobic organisms transform oxygen molecules into water. This reductive mechanism yields toxic radical intermediates, collectively known as reactive oxygen species (ROS). Paradoxically, these physiological processes entail the production of potentially damaging species. Evolution has turned this apparent disadvantage into an opportunity for transmitting information. As a result, redox signaling within the cell is an efficient exquisitely organized process. A key element for its regulation is the physical separation of sources and targets in different cell compartments. Peroxiporins, H2O2 transporting proteins spanning biological membranes, distribute the signal from emitters to receptors. Thus, these channels are strategically situated in the thin line between life and death, guaranteeing adequate but safe signaling.

Key Features:

- Provides a brief history of the discovery and characterization of peroxiporins
- Reviews key findings on hydrogen peroxide transport across biological membranes
- Discusses the cartography of redox signaling in crowded cells
- Includes lavish illustrations and comprehensive images to facilitate teaching
- Highlights recent findings, outstanding controversies and open questions

Contents:

Chapter 1-Role of the cellular hydrogen peroxide landscape profile in redox signaling

Helmut Sies

Chapter 2-How gradients and microdomains determine H2O2 redox signaling

Fernando Antunesa, Armindo Salvador

Chapter 3-Diffusion and transport of peroxynitrite across cell membranes

Matias N. Moellera, Karina Allevac, Ari Zeidab, Rafael Radib

Chapter 4-Hydrogen peroxide as a substrate for aquaporins from a structure-function perspective

Eric Beitz

Chapter 5-Use of genetically encoded reporters to quantify intracellular H2O2 levels in eukaryotic cells

Laura de Cubasa, Fernando Antunesb, Olga Lyublinskayac, and Elena Hidalgoa

Chapter 6-H2O2/ROS production, consumption and transport across organelles

Tasuku Konno, Cecile Crapart, Edward Avezov

Chapter 7-The Mystery behind Hydrogen Peroxide Permeation across the Peroxisomal Membrane

Claudio F. Costaa, Celien Lismont, Marco Anteghini, Iulia Revenco, Hongli Li, Marc Fransen

Chapter 8-Role of mammalian aquaporin (AQP) inside the cell: An update.

Kenichi Ishibashi, Yoshiyuki Morishita, Yasuko Tanaka-Mochizuki

Chapter 9-Peroxiporins in plant-microbial interactions

Barbara Ludwig Navarro, Kathrin Blumenstein, Daniela Elisabeth Nordzieke

Chapter 10-Role of peroxiporins in plant stress signaling and development

Stephanie Frohn, Bernd Dreyer, Romy Schmidt-Schippers, Jos H.M. Schippers

Chapter 11-Evolution and function of peroxiporins in piscine spermatozoa

Joan Cerda, Francois Chauvigne, Roderick Nigel Finn

Chapter 12-Regulated Transport of H2O2 Across the Plasma Membrane by Aquaporin-8

Milena Bertolotti, Jose Manuel Garcia-Manteiga, Roberto Sitia

Chapter 13- Peroxiporins as crucial advocates of redox architecture

Ilaria Sorrentino, Angie K. Molina-Oviedo, Eduardo Arevalo-Nunez de Arenas, Iria Medrano-Fernandez

Chapter 14- The history on the discovery of peroxiporins

Tobias Henzler, Michael Broberg Palmgren and Gerd Patrick Bienert