>2y69D (D:) observed residues (from ATOM records)
svvksedyalpsyvdrrdyplpdvahvknlsasqkalkekekaswsslsidekvelyrlk
fkesfaemnrstnewktvvgaamffigftallliwekhyvygpiphtfeeewvakqtkrm
ldmkvapiqgfsakwdydknewkk