Chains and heterogens:
PDB Chain Sequences:
>3s1cA (A:) laagtpalgddrgrpwpaslaalaldgklrtdsnataaastdfgnitsalpaavlypsst adlvallsaanstpgwpytiafrgrghslmgqafapggvvvnmaslgdaaapprinvsad gryvdaggeqvwidvlraslargvaprswtdylyltvggtlsnagisgqafrhgpqisnv lemdvitghgemvtcskqlnadlfdavlgglgqfgvitrariavepapararwvrlvytd faafsadqerltaprpggggasfgpmsyvegsvfvnqslatdlantgfftdadvarival agernattvysieatlnydnataaaaavdqelasvlgtlsyvegfafqrdvayaafldrv hgeevalnklglwrvphpwlnmfvprsriadfdrgvfkgilqgtdivgplivyplnksmw ddgmsaatpsedvfyavsllfssvapndlarlqeqnrrilrfcdlagiqyktylarhtdr sdwvrhfgaakwnrfvemknkydpkrllspgqdifn
>3s1cA (A:) pwpaslaalaldgklrtdsnataaastdfgnitsalpaavlypsstadlvallsaanstp gwpytiafrgrghslmgqafapggvvvnmaslgdaaapprinvsadgryvdaggeqvwid vlraslargvaprswtdylyltvggtlsnagisgqafrhgpqisnvlemdvitghgemvt cskqlnadlfdavlgglgqfgvitrariavepapararwvrlvytdfaafsadqerltap rpasfgpmsyvegsvfvnqslatdlantgfftdadvarivalagernattvysieatlny dnataaaaavdqelasvlgtlsyvegfafqrdvayaafldrvhgeevalnklglwrvphp wlnmfvprsriadfdrgvfkgilqgtdivgplivyplnksmwddgmsaatpsedvfyavs llfssvapndlarlqeqnrrilrfcdlagiqyktylarhtdrsdwvrhfgaakwnrfvem knkydpkrllspgqdifn