Chains and heterogens:
PDB Chain Sequences:
>1w54A (A:) msftpanraypytrlrrnrrddfsrrlvrenvltvddlilpvfvldgvnqresipsmpgv erlsidqllieaeewvalgipalalfpvtpvekksldaaeaynpegiaqratralrerfp elgiitdvaldpftthgqcgildddgyvlndvsidvlvrqalshaeagaqvvapsdmmdg rigairealesaghtnvrvmaysakyasayygpfrdavgsasnlgkgnkatyqmdpansd ealhevaadlaegadmvmvkpgmpyldivrrvkdefraptfvyqvsgeyamhmgaiqngw laesvilesltafkragadgiltyfakqaaeqlrrgr
>1w54A (A:) trlrrnrrddfsrrlvrenvltvddlilpvfvldgvnqresipsmpgverlsidqlliea eewvalgipalalfpvtpvekksldaaeaynpegiaqratralrerfpelgiitdvaldp ftthgqcgildddgyvlndvsidvlvrqalshaeagaqvvapsdmmdgrigairealesa ghtnvrvmaysakyasayygpfrdaatyqmdpansdealhevaadlaegadmvmvkpgmp yldivrrvkdefraptfvyqvsgeyamhmgaiqngwlaesvilesltafkragadgilty fakqaaeqlrrg
>1w54B (B:) msftpanraypytrlrrnrrddfsrrlvrenvltvddlilpvfvldgvnqresipsmpgv erlsidqllieaeewvalgipalalfpvtpvekksldaaeaynpegiaqratralrerfp elgiitdvaldpftthgqcgildddgyvlndvsidvlvrqalshaeagaqvvapsdmmdg rigairealesaghtnvrvmaysakyasayygpfrdavgsasnlgkgnkatyqmdpansd ealhevaadlaegadmvmvkpgmpyldivrrvkdefraptfvyqvsgeyamhmgaiqngw laesvilesltafkragadgiltyfakqaaeqlrrgr
>1w54B (B:) anraypytrlrrnrrddfsrrlvrenvltvddlilpvfvldgvnqresipsmpgverlsi dqllieaeewvalgipalalfpvtpvekksldaaeaynpegiaqratralrerfpelgii tdvaldpftthgqcgildddgyvlndvsidvlvrqalshaeagaqvvapsdmmdgrigai realesaghtnvrvmaysakyasayygpfrdavgsatyqmdpansdealhevaadlaega dmvmvkpgmpyldivrrvkdefraptfvyqvsgeyamhmgaiqngwlaesvilesltafk ragadgiltyfakqaaeqlrrg