>4db1B (B:) observed residues (from ATOM records)
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fcvtvnpykwlpvytpevvaayrgkkrseapphifsisdnayqymltdrenqsilitges
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qreeqaepdgteeadksaylmglnsadllkglchpryvtkgqnvqqviyatgalakavye
rmfnwmvtrinatletkqprqyfigvldiagfeifdfnsfeqlcinftneklqqffnhhm
fvleqeeykkegiewtfidfgmdlqacidliekpmgimsileeecmfpkatdmtfkaklf
dnhlgksanfqkprnikgkpeahfslihyagivdyniigwlqknkdplnetvvglyqkss
lkllstlfanyagqtvsalhrenlnklmtnlrsthphfvrciipnetkspgvmdnplvmh
qlrcngvlegiricrkgfpnrilyaekllssldidhnqykfghtkvffkagllgllee