Tgfbr1 signaling governs all processes associated with the trunk to tail transition, including the repositioning of neuro-mesodermal progenitors, as well as the remodeling of the lateral plate mesoderm and embryonic endoderm.
Progesterone mediates nongenomic signaling in Xenopus oocyte meiosis by activating a PLA2 activity that requires two membrane receptors ABDH2 and mPRß.