>1t7vA (A:) observed residues (from ATOM records)
dgrysltyiytglskhvedvpafqalgslndlqffrynskdrksqpmglwrqvegmedwk
qdsqlqkaredifmetlkdiveyykdstgshvlqgrfgceiennrssgafwkyyydgkdy
iefnkeipawvpfdpaaqitkqkweaepvyvqrakayleeecpatlrkylkysknildrq
dppsvvvtshqapgekkklkclaydfypgkidvhwtragevqepelrgdvlhngngtyqs
wvvvavppqdtapyschvqhsslaqplvvpwea