Explore the intricate world of quantum tunnelling in enzyme catalysis with this comprehensive guide. Delve into modern theories, computational methods, and experimental results that illuminate H-tunneling in biological systems, bridging biology, chemistry, and physics. Featuring insights from Nobel Laureate Rudolph A. Marcus and leading experts, this book offers an up-to-date account of a rapidly developing field. Essential reading for advanced undergraduates, postgraduates, and researchers in chemistry, physics, and biochemistry seeking to master complex reaction mechanisms and key scientific research methods.