Chains and heterogens:
PDB Chain Sequences:
>1bf2A (A:) ainsmslgasydaqqanitfrvyssqatrivlylysagygvqesatytlspagsgvwavt vpvssikaagitgavyygyrawgpnwpyasnwgkgsqagfvsdvdangdrfnpnkllldp yaqevsqdplnpsnqngnvfasgasyrttdsgiyapkgvvlvpstqstgtkptraqkddv iyevhvrgfteqdtsipaqyrgtyygaglkasylaslgvtaveflpvqetqndandvvpn sdanqnywgymtenyfspdrryaynkaaggptaefqamvqafhnagikvymdvvynhtae ggtwtssdpttatiyswrgldnatyyeltsgnqyfydntgiganfntyntvaqnlivdsl aywantmgvdgfrfdlasvlgnsclngaytasapncpnggynfdaadsnvainrilreft vrpaaggsgldlfaepwaiggnsyqlggfpqgwsewnglfrdslrqaqnelgsmtiyvtq dandfsgssnlfqssgrspwnsinfidvhdgmtlkdvyscngannsqawpygpsdggtst nyswdqgmsagtgaavdqrraartgmafemlsagtplmqggdeylrtlqcnnnaynldss anwltyswttdqsnfytfaqrliafrkahpalrpsswysgsqltwyqpsgavadsnywnn tsnyaiayaingpslgdsnsiyvayngwsssvtftlpappsgtqwyrvtdtcdwndgast fvapgsetliggagttygqcgqsllllisk