Uncovering mechanisms in biology, gaining insights into physiology and diseaseScience Signaling is a weekly, online multidisciplinary journal for the life sciences. The aim of the journal editors is to publish studies that uncover the basic mechanisms that underlie biological processes across all organisms. Particular emphasis is placed on studies that provide new insights into physiology; delineate aberrant mechanisms that cause disease; identify new potential therapeutic targets and strategies; and characterize the effects of drugs in vitro and in vivo.