Domain Carboxy Domain Repeat Domain Amino Domain Features Exons 9 5 9 Nucleotides (bp) 14,000 Single: 1900Cumulative: Unknown 50,950 Amino Acids (aa) 284 Single: 156Cumulative: >9360 12,068 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)