SCT GI:11345450 secretin preproprotein 1 maprplllll lllggsaarp apprarrhsd gtftselsrl regarlqrll 50 51 qglvgkrseq daensmawtr lsagllcpsg snmpilqawm pldgtwspwl 100 101 ppgpmvsepa gaaaegtlrp r