Chains and heterogens:
PDB Chain Sequences:
>1drv_ (-) anirvaiagaggrmgrqliqaalalegvqlgaaleregssllgsdagelagagktgvtvq ssldavkddfdvfidftrpegtlnhlafcrqhgkgmvigttgfdeagkqairdaaadiai vfaanfsvgvnvmlkllekaakvmgdytdieiieahhrhkvdapsgtalamgeaiahald kdlkdcavysreghtgervpgtigfatvragdivgehtamfadigerleithkassrmtf angavrsalwlsgkesglfdmrdvldlnnl