Antigen: synthetic peptides corresponding to amino acids 12-29 and 36-50 of human SMAD7 . Host: rabbit . Cross Reactivity: (+) human, mouse, rat, and ovine SMAD7; predicted to react with chimpanzee, canine, pufferfish, Xenopus, and zebrafish SMAD7 . Application(s): WB . SMAD7 is an inhibitory SMAD (I-SMAD) that is part of a family of intracellular proteins that are essential components in the signaling pathways of the serine/threonine kinase receptors of the transforming growth factor (beta) superfamily.