>4i3uB (B:) observed residues (from ATOM records)
hepmriagrlvdtddrvevrypwndtvvgtvpagraehareafaiaaayqpkltryerqk
illataealaarkeeisdvitlelgiskadslyevgrafdvftlagqmcirddgeifscd
ltphgkarkiftmrepltaisaitpfnhplnmvahkvapaiatnncvvvkpteltpmtal
lladilyeaglppemlsvvtgwpadigmemitnphvdlvtftgsvpvgkliaanahykrq
vlelggndpliilndlsdddlaraadlavagatknsgqrctavkrilcqesvadrfvplv
lerakrlrfgdpmdrstdlgtvihekaaalfeervmraaeegadilyhpgrsgallppiv
vdrvphqsdlvleetfgpiipivrvpddddatitlsnstafglssgvctndyrrmqkyia
glkvgtvniwevpgyriemspfggikdsgngykegvieamksftnvktfslpw