Chains and heterogens:
PDB Chain Sequences:
>1n76A (A:) rrrsvqwctvsqpeatkcfqwqrnmrrvrgppvscikrdspiqciqaiaenradavtldg gfiyeaglapyklrpvaaevygterqprthyyavavvkkggsfqlnelqglkschtglrr tagwnvpigtlrpflnwtgppepieaavarffsascvpgadkgqfpnlcrlcagtgenkc afssqepyfsysgafkclrdgagdvafirestvfedlsdeaerdeyellcpdntrkpvdk fkdchlarvpshavvarsvngkedaiwnllrqaqekfgkdkspkfqlfgspsgqkdllfk dsaigfsrvppridsglylgsgyftaiqnlrkseeevaarrarvvwcavgeqelrkcnqw sglsegsvtcssasttedcialvlkgeadamsldggyvytagkcglvpvlaenyksqqss dpdpncvdrpvegylavavvrrsdtsltwnsvkgkkschtavdrtagwnipmgllfnqtg sckfdeyfsqscapgsdprsnlcalcigdeqgenkcvpnsneryygytgafrclaenagd vafvkdvtvlqntdgnnndawakdlkladfallcldgkrkpvtearschlamapnhavvs rmdkverlkqvllhqqakfgrngsdcpdkfclfqsetknllfndnteclarlhgkttyek ylgpqyvagitnlkkcstsplleaceflrk