>4tkuA (A:) observed residues (from ATOM records)
msreevesliqevlevypekarkdrnkhlavndpavtqskkciisnkksqpglmtirgca
yagskgvvwgpikdmihishgpvgcgqysragrrnyyigttgvnafvtmnftsdfqekdi
vfggdkklaklidevetlfplnkgisvqsecpigligddiesvskvkgaelsktivpvrc
egfrgvsqslghhiandavrdwvlgkrdedttfastpydvaiigdyniggdawssrille
emglrcvaqwsgdgsiseieltpkvklnlvhcyrsmnyisrhmeekygipwmeynffgpt
ktieslraiaakfdesiqkkceeviakykpeweavvakyrprlegkrvmlyigglrprhv
igayedlgmevvgtgyefahnddydrtmkemgdstllyddvtgyefeefvkrikpdligs
gikekfifqkmgipfrqmhswdysgpyhgfdgfaifardmdmtlnnpcwkklqapwe