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