Chains and heterogens:
PDB Chain Sequences:
>1siuA (A:) aaptaytpldvaqayqfpegldgqgqciaiielgggydeaslaqyfaslgvpapqvvsvs vdgasnqptgdpsgpdghveldievagalapgakfavyfapntdagfldaittaihdptl kpsvvsiswggpedswtsaaiaamnrafldaaalgvtvlaaagdsgstdgeqdglyhvdf paaspyvlacggtrlvasggriaqetvwndgpdggatgggvsrifplpawqehanvppsa npgassgrgvpdlagnadpatgyevvidgeatviggtsavaplfaalvarinqklgkavg ylnptlyqlpadvfhditegnndianraqiyqagpgwdpctglgspigvrllqallpsas qpqp
>1siuA (A:) taytpldvaqayqfpegldgqgqciaiielgggydeaslaqyfaslgvpapqvvsvsvdg asnqptgdpsgpdghveldievagalapgakfavyfapntdagfldaittaihdptlkps vvsiswggpedswtsaaiaamnrafldaaalgvtvlaaagdsgstdgeqdglyhvdfpaa spyvlacggtrlvasggriaqetvwndgpdggatgggvsrifplpawqehanvppsanpg assgrgvpdlagnadpatgyevvidgeatviggtsavaplfaalvarinqklgkavgyln ptlyqlpadvfhditegnndianraqiyqagpgwdpctglgspigvrllqallps