Chains and heterogens:
PDB Chain Sequences:
>1trb_ (-) gttkhskllilgsgpagytaavyaaranlqpvlitgmekggqlttttevenwpgdpndlt gpllmermhehatkfeteiifdhinkvdlqnrpfrlngdngeytcdaliiatgasarylg lpseeafkgrgvsacatsdgffyrnqkvavigggntaveealylsniasevhlihrrdgf raekilikrlmdkvengniilhtnrtleevtgdqmgvtgvrlrdtqnsdniesldvaglf vaighspntaifegqlelengyikvqsgihgnatqtsipgvfaagdvmdhiyrqaitsag tgcmaaldaeryldgladak
>1trb_ (-) gttkhskllilgsgpagytaavyaaranlqpvlitgmekggqlttttevenwpgdpndlt gpllmermhehatkfeteiifdhinkvdlqnrpfrlngdngeytcdaliiatgasarylg lpseeafkgrgvsacatsdgffyrnqkvavigggntaveealylsniasevhlihrrdgf raekilikrlmdkvengniilhtnrtleevtgdqmgvtgvrlrdtqnsdniesldvaglf vaighspntaifegqlelengyikvqsgihgnatqtsipgvfaagdvmdhiyrqaitsag tgcmaaldaeryldgl