    New chain ID            Original chain ID

9rvu_1-pdb-bundle1.pdb:
           A                        AD
           B                        AE
           C                        AF
           D                        AG
           E                        AH
           F                        AI
           G                        AJ
           H                        AK
           I                        AL
           J                        AM
           K                        AN
           L                        AO
           M                        AP
           N                        AQ
           O                        AR
           P                        AS
           Q                        AT
           R                        AU
           S                        AV
           T                        AW
           U                        Aa
           V                        Ab
           W                        Ac
           X                        Ad
           Y                        Ae
           Z                        Af
           a                        Ag
           b                        Ah
           c                        Ai
           d                        Aj
           e                        Ak
           f                        Am
           g                        B0
           h                        B1
           i                        BN
           j                        BO
           k                        BP
           l                        BQ
           m                        BR
           n                        BS
           o                        BT
           p                        BV
           q                        BW
           r                        BX
           s                        BY
           t                        BZ
           u                        Ba
           v                        Bc
           w                        Bd
           x                        Be
           y                        Bf
           z                        Bg
           0                        Bh
           1                        Bi
           2                        Bj
           3                        Bk
           4                        Bl
           5                        Bm
           6                        Bn
           7                        Bo
           8                        Bp
           9                        Bq
9rvu_1-pdb-bundle2.pdb:
           A                        Br
           B                        Bs
           C                        Bt
           D                        Bu
           E                        Bv
           F                        Bw
           G                        Bx
           H                        By
           I                        H1
           J                        HE
           K                        HL
           L                        HS
           M                        HI
           N                        BA
           O                        BU
           P                        Bb
