Chains and heterogens:
PDB Chain Sequences:
>1bfn_ (-) atsdsnmllnyvpvyvmlplgvvnvdnvfedpdglkeqllqlraagvdgvmvdvwwgiie lkgpkqydwrayrsllqlvqecgltlqaimsfhqcggnvgdivnipipqwvldigesnhd ifytnrsgtrnkeyltvgvdnepifhgrtaieiysdymksfrenmsdflesgliidievg lgpagelrypsypqsqgwefpgigefqcydkylkadfkaavaraghpewelpddagkynd vpestgffksngtyvtekgkffltwysnkllnhgdqildeankaflgckvklaikvsgih wwykvenhaaeltagyynlndrdgyrpiarmlsrhhailnftclemrdseqpsdaksgpq elvqqvlsggwredirvagenalprydataynqiilnarpqgvnnngppklsmfgvtylr lsddllqksnfnifkkfvlkmhadqdycanpqkynhaitplkpsapkipievlleatkpt lpfpwlpetdmkvdg
>1bfn_ (-) nmllnyvpvyvmlplgvvnvdnvfedpdglkeqllqlraagvdgvmvdvwwgiielkgpk qydwrayrsllqlvqecgltlqaimsfhqcggnvgdivnipipqwvldigesnhdifytn rsgtrnkeyltvgvdnepifhgrtaieiysdymksfrenmsdflesgliidievglgpag elrypsypqsqgwefpgigefqcydkylkadfkaavaraghpewelpddagkyndvpest gffksngtyvtekgkffltwysnkllnhgdqildeankaflgckvklaikvsgihwwykv enhaaeltagyynlndrdgyrpiarmlsrhhailnftclemrdseqpsdaksgpqelvqq vlsggwredirvagenalprydataynqiilnarpqgvnnngppklsmfgvtylrlsddl lqksnfnifkkfvlkmhadqdycanpqkynhaitplkpsapkipievlleatkptlpfpw lpetdmkvdg