    New chain ID            Original chain ID

9ss4-pdb-bundle1.pdb:
           A                        B0
           B                        B1
           C                        B2
           D                        B3
           E                        B4
           F                        B5
           G                        B6
           H                        B7
           I                        B8
           J                        B9
           K                        BA
           L                        BB
           M                        BC
           N                        BD
           O                        BE
           P                        BF
           Q                        BG
           R                        BI
           S                        BK
           T                        BM
           U                        BN
           V                        BO
           W                        BP
           X                        BQ
           Y                        BR
           Z                        BS
           a                        BT
           b                        BU
           c                        BV
           d                        BW
           e                        BX
           f                        BY
           g                        D2
           h                        D3
           i                        FS
