This book of advanced researches aims to serve as a resource guide in the field of protein kinases. The aim of this book is to educate readers on protein kinases. As regulators of protein function, protein kinases are concerned with the control of cellular functions through complicated signaling pathways, enabling fine tuning of physiological functions. This book is an integrated effort, with contributions from experts in modern science from across the globe. Existing literature is reviewed in this book, and occasionally, new data on the function of protein kinases in different systems is also provided. The book discusses broad topics related to the role of c-Src tyrosine kinase in bone metabolism, protein kinases and pancreatic islet function, kinases in spinal plasticity etc.