>gnl|PDB|1CSB.1 strand_id:A,D description:CATHEPSIN B light chain
LPASFDAREQWPQCPTIKEIRDQGSCGSCWAFGAVEAISDRICIHTN
>gnl|PDB|1CSB.2 strand_id:B,E description:CATHEPSIN B heavy chain
VSVEVSAEDLLTCCGSMCGDGCNGGYPAEAWNFWTRKGLVSGGLYESHVGCRPYSIPPCEHHVNGSRPPCTGEGDTPKCSKICEPGYSPTYKQDKHYGYNSYSVSNSEKDIMAEIYKNGPVEGAFSVYSDFLLYKSGVYQHVTGEMMGGHAIRILGWGVENGTPYWLVANSWNTDWGDNGFFKILRGQDHCGIESEVVAGIPRTD