Cytosol, the liquid found inside cells, is the site for multiple cell processes, including signaling from the cell membrane to sites within the cell. Cytosolic signaling mechanisms are researched and studied in graduate programs in cell biology, molecular biology, biochemistry, pharmacology, molecular and cellular physiology, pharmacy, and biomedical sciences. This title includes articles written and edited by experts in the field. This is a thematic volume covering material needed for young professionals joining the field of research and graduate students taking survey courses. It features up-to-date research on signaling systems and mutations in transcription factors that provide new targets for treating disease.