Chains and heterogens:
PDB Chain Sequences:
>1bfn_ (-) nmllnyvpvyvmlplgvvnvdnvfedpdglkeqllqlraagvdgvmvdvwwgiielkgpk qydwrayrsllqlvqecgltlqaimsfhqcggnvgdivnipipqwvldigesnhdifytn rsgtrnkeyltvgvdnepifhgrtaieiysdymksfrenmsdflesgliidievglgpag elrypsypqsqgwefpgigefqcydkylkadfkaavaraghpewelpddagkyndvpest gffksngtyvtekgkffltwysnkllnhgdqildeankaflgckvklaikvsgihwwykv enhaaeltagyynlndrdgyrpiarmlsrhhailnftclemrdseqpsdaksgpqelvqq vlsggwredirvagenalprydataynqiilnarpqgvnnngppklsmfgvtylrlsddl lqksnfnifkkfvlkmhadqdycanpqkynhaitplkpsapkipievlleatkptlpfpw lpetdmkvdg