The study is being published in Science Express, an advanced online edition of the journal Science, on April 5. It will appear in the print version of Science later this spring.In findings the authors called “unexpected and striking,” the study found that a new regulating messenger IP4, a small soluble molecule, augments the binding of three different PH domain proteins to one of the most commonly recognized membrane lipids, PIP3. The study also showed that inhibiting production of IP4 can result in reduced protein binding to membranes and reduced activation of key signaling molecules in developing T cells, leading to a block of T cell maturation and to severe immunodeficiency in animal models. >>> Discuss This Story