>1xrfA (A:) observed residues (from ATOM records)
wmlklivkngyvidpsqnlegefdilvengkikkidknilvpeaeiidakglivcpgfid
ihvhlrdpgqtykediesgsrcavaggfttivcmpntnppidnttvvnyilqksksvglc
rvlptgtitkgrkgkeiadfyslkeagcvaftddgspvmdssvmrkalelasqlgvpimd
haeeiqiardgilaqrtgghvhiqhvstklsleiieffkekgvkitcevnpnhlldrlal
iegvkrgiidcfatdhaphqtmpgiiglqtalpsalelyrkgiislkkliemftinpari
igvdlgtlklgspaditifdpnkewilneetnlsksrntplwgkvlkgkviytikdgkmv
ykd