Chains and heterogens:
PDB Chain Sequences:
>3b7tA (A:) hhhhhhpeivdtcslaspasvcrtkhlhlrcsvdftrrtltgtaaltvqsqednlrslvl dtkdltiekvvingqevkyalgerqsykgspmeislpialsknqeivieisfetspkssa lqwltpeqtsgkehpylfsqcqaihcrailpcqdtpsvkltytaevsvpkelvalmsair dgetpdpedpsrkiykfiqkvpipcylialvvgalesrqigprtlvwsekeqveksayef setesmlkiaedlggpyvwgqydllvlppsfpyggmenpcltfvtptllagdkslsnvia hqishswtgnlvtnktwdhfwlneghtvylerhicgrlfgekfrhfnalggwgelqnsvk tfgethpftklvvdltdidpdvayssvpyekgfallfyleqllggpeiflgflkayvekf syksittddwkdflysyfkdkvdvlnqvdwnawlyspglppikpnydmtltnacialsqr witakeddlnsfnatdlkdlsshqlneflaqtlqraplplghikrmqevynfnainnsei rfrwlrlciqskwedaiplalkmateqgrmkftrplfkdlaafdkshdqavrtyqehkas mhpvtamlvgkdlkvd
>3b7tA (A:) peivdtcslaspasvcrtkhlhlrcsvdftrrtltgtaaltvqsqednlrslvldtkdlt iekvvingqevkyalgerqsykgspmeislpialsknqeivieisfetspkssalqwltp eqtsgkehpylfsqcqaihcrailpcqdtpsvkltytaevsvpkelvalmsairdgetpd pedpsrkiykfiqkvpipcylialvvgalesrqigprtlvwsekeqveksayefsetesm lkiaedlggpyvwgqydllvlppsfpyggmenpcltfvtptllagdkslsnviahqishs wtgnlvtnktwdhfwlneghtvylerhicgrlfgekfrhfnalggwgelqnsvktfgeth pftklvvdltdidpdvayssvpyekgfallfyleqllggpeiflgflkayvekfsyksit tddwkdflysyfkdkvdvlnqvdwnawlyspglppikpnydmtltnacialsqrwitake ddlnsfnatdlkdlsshqlneflaqtlqraplplghikrmqevynfnainnseirfrwlr lciqskwedaiplalkmateqgrmkftrplfkdlaafdkshdqavrtyqehkasmhpvta mlvgkdlkvd