>1k9aD (D:) observed residues (from ATOM records)
aswpsgteciakynfhgtaeqdlpfckgdvltivavtkdpnwykaknkvgregiipanyv
qkregvkagtklslmpwfhgkitreqaerllyppetglflvreytlcvscegkvehyrim
yhasklsideevyfenlmqlvehyttdadglctrlikpkvmegtvaaqdefyrsgwalnm
kelkllqtigkgefgdvmlgdyrgnkvavkcikndataqaflaeasvmtqlrhsnlvqll
gviveekgglyivteymakgslvdylrsrgrsvlggdcllkfsldvceameylegnnfvh
rdlaarnvlvsednvakvsdfgltkeasstlpvkwtapealrekkfstksdvwsfgillw
eiysfgrvpypriplkdvvprvekgykmdapdgcppavydvmkncwhldaatrptflqlr
eqlehirthelhl