Chains and heterogens:
PDB Chain Sequences:
>1f25A (A:) asgapsfpfsrasgpeppaefaklratnpvsqvklfdgslawlvtkhkdvcfvatsekls kvrtrqgfpelsasgkqaakakptfvdmdppehmhqrsmveptftpeavknlqpyiqrtv ddlleqmkqkgcangpvdlvkefalpvpsyiiytllgvpfndleyltqqnairtngssta reasaanqelldylailveqrlvepkddiisklcteqvkpgnidksdavqiaflllvagn anmvnmialgvatlaqhpdqlaqlkanpslapqfveelcryhtasalaikrtakedvmig dklvranegiiasnqsanrdeevfenpdefnmnrkwppqdplgfgfgdhrciaehlakae lttvfstlyqkfpdlkvavplgkinytplnrdvgivdlpvif
>1f25A (A:) apsfpfsrasgpeppaefaklratnpvsqvklfdgslawlvtkhkdvcfvatseklskvr trqgfpelsasgkqaakakptfvdmdppehmhqrsmveptftpeavknlqpyiqrtvddl leqmkqkgcangpvdlvkefalpvpsyiiytllgvpfndleyltqqnairtngsstarea saanqelldylailveqrlvepkddiisklcteqvkpgnidksdavqiaflllvagnanm vnmialgvatlaqhpdqlaqlkanpslapqfveelcryhtasalaikrtakedvmigdkl vranegiiasnqsanrdeevfenpdefnmnrkwppqdplgfgfgdhrciaehlakaeltt vfstlyqkfpdlkvavplgkinytplnrdvgivdlpvif