Chains and heterogens:
PDB Chain Sequences:
>3so7A (A:) tgdlintvrgpipvseagftlthehicgssagflrawpeffgsrkalaekavrglrhara agvqtivdvstfdigrdvrllaevsraadvhivaatglwfdpplsmrmrsveeltqfflr eiqhgiedtgiragiikvattgkatpfqelvlkaaaraslatgvpvtthtsasqrdgeqq aaifeseglspsrvcighsddtddlsyltglaargylvgldrmpysaiglegnasalalf gtrswqtrallikalidrgykdrilvshdwlfgfssyvtnimdvmdrinpdgmafvplrv ipflrekgvppetlagvtvanparflspt