Chains and heterogens:
PDB Chain Sequences:
>1u2cA (A:) avptvvgipdgtavvgrsfrvsiptdliassgeiikvsaagkealpswlhwdphshileg lpldtdkgvhyisvsaarlgangshvpqtssvfsievypedhnepqsvraassdpgevvp sacaadepvtvltvildadltkmtpkqridllnrmqsfsevelhnmklvpvvnnrlfdms afmagpgnakkvvengallswklgcslnqnsvpdirgvetparegamsaqlgypvvgwhi ankkpt
>1u2cA (A:) avptvvgipdgtavvgrsfrvsiptdliassgeiikvsaagkealpswlhwdphshileg lpldtdkgvhyisvsaarlgangshvpqtssvfsievypedhnacaadepvtvltvilda dltkmtpkqridllnrmqsfsevelhnmklvpvvnnrlfdmsafmagpgnakkvvengal lswklgcslnqnsvpdirgvetparegamsaqlgypvvgwhiankkpt