CTSB GI:22538437 cathepsin B preproprotein 1 mwqlwaslcc llvlanarsr psfhplsdel vnyvnkrntt wqaghnfynv 50 51 dmsylkrlcg tflggpkppq rvmftedlkl pasfdareqw pqcptikeir 100 101 dqgscgscwa fgaveaisdr icihtnahvs vevsaedllt ccgsmcgdgc 150 151 nggypaeawn fwtrkglvsg glyeshvgcr pysippcehh vngsrppctg 200 201 egdtpkcski cepgysptyk qdkhygynsy svsnsekdim aeiykngpve 250 251 gafsvysdfl lyksgvyqhv tgemmgghai rilgwgveng tpywlvansw 300 301 ntdwgdngff kilrgqdhcg iesevvagip rtdqyweki