Molecular Characteristics  Stop CodonPoly A SignalPotential Transmembrane Region (aa 230–252)Potential Cytoplasmic Region (aa 256–260)Potential ProteolyticCleavage Sites (aa 171–181 [18] and aa 35/36 [22])  SEA domainCysteine loop (aa 59,79) [23]Conserved Methionine (aa 24)Serine/Threonine/Proline Rich  Serine/Threonine Rich(Abundant O-glycosylation Potential, N-glycosylation Potential)