Cripto-1

Cripto-1 is the founding member of the EGF-CFC gene family, which is conserved among vertebrates. Proteins within this family contain a signal sequence, a characteristic EGF-like domain, a cysteine-rich region termed the cryptic (CFC) motif, and a hydrophobic C- terminus. It has been reported that Cripto-1 is O-fucosylated on Thr-88 and that this modification is required for the physical interaction with Nodal as well as for signalling activity. We have confirmed that Cripto-1B    is O-fucosylated at this site