Chains and heterogens:
PDB Chain Sequences:
>1tvuA (A:) mleqpyldlakkvldeghfkpdrthtgtysifghqmrfdlskgfpllttkkvpfglikse llwflhgdtnirfllqhrnhiwdewafekwvksdeyhgpdmtdfghrsqkdpefaavyhe emakfddrvlhddafaakygdlglvygsqwrawhtskgdtidqlgdvieqikthpysrrl ivsawnpedvptmalppchtlyqfyvndgklslqlyqrsadiflgvpfaiasyallthlv ahecglevgefihtfgdahlyvnhldqikeqlsrtprpaptlqlnpdkhdifdfdmkdik llnydpypaikapvav