>4zt6A (A:) observed residues (from ATOM records)
vekvffvtspiyyvnaaphighvystlitdvigryhrvkgervfaltgtdehgqkvaeaa
kqkqvspydfttavagefkkcfeqmdysidyfirttneqhkavvkelwtkleqkgdiylg
ryegwysisdesfltpqnitdgvdkdgnpckvslesghvvtwvseenymfrlsafrerll
ewyhanpgcivpefrrreviravekglpdlsvsraratlhnwaipvpgnpdhcvyvwlda
ltnyltgsrlrvdesgkevslvddfnelerfpadvhvigkdilkfhaiywpafllsaglp
lpkkivahgwwtkdrkkislgnvfdpvekaeefgydalkyfllresgfsddgdysdknmi
arlngeladtlgnlvmrctsakinvngewpspaayteedesliqlikdlpgtadhyylip
diqkaiiavfdvlrainayvtdmapwklvktdperlrtvlyitlegvrvttlllspilpr
ksvvifdmlgvpevhrkgienfefgavppgtrlgpavevlfskrst