RNA Helicases are key enzymes that are involved in all aspects of RNA metabolism. This volume provides the first comprehensive and systematic overview of biology, mechanism, and structure of RNA helicases. Research on RNA helicases takes place in many different fields from cell and developmental biology to mechanistic enzymology and structural biology. This book integrates the knowledge of these diverse fields into one valuable resource - an informative overview of the entire class of enzymes. Individual chapters that focus on each family of RNA helicases are written by experts in the respective fields and all chapters are systematically integrated. The reader is guided by a didactic introductory chapter. The main strengths of the book - the combination of systematics and details make this volume a key reference for academics, advanced students, researchers and professionals working in or joining fields where RNA helicases play important roles.