An Introduction to the book.- Chitin: structure, chemistry & biology.- Chitin prevalence and function in bacteria, fungi and protists.- Immune responses of mammals and plants to chitin-containing pathogens.- Chitin organizing and modifying enzymes and proteins involved in remodeling of the insect cuticle.- Chitin-active lytic polysaccharide monooxygenases.- Bacterial Chitinase System as a Model of Chitin Biodegradation.- Chitin synthesis and degradation in fungi: biology and enzymes.- Chitin in Arthropods: Biosynthesis, Modification and Metabolism.- Nematode chitin and application.- Human Chitinases: Structure, Function and Inhibitor Discovery.- Chitin/chitosan-active enzymes involved in plant-microbe interactions.- Chitinous structures as potential targets for insect pest control