Chains and heterogens:
PDB Chain Sequences:
>1ehfA (A:) apsfpfsrasgpeppaefaklratnpvsqvklfdgslawlvtkhkdvcfvatseklskvr trqgfpelsasgkqaakakptfvdmdppehmhqrsmveptftpeavknlqpyiqrtvddl leqmkqkgcangpvdlvkefalpvpsyiiytllgvpfndleyltqqnairtngsstarea saanqelldylailveqrlvepkddiisklcteqvkpgnidksdavqiaflllvagnatm vnmialgvatlaqhpdqlaqlkanpslapqfveelcryhtatalaikrtakedvmigdkl vranegiiasnqsanrdeevfenpdefnmnrkwppqdplgfgfgdhrciaehlakaeltt vfstlyqkfpdlkvavplgkinytplnrdvgivdlpvif