>4d99A (A:) observed residues (from ATOM records)
mplhhltrfprlefigaptpleylprlsdylgreiyikrddvtpiamggnklrkleflva
dalregadtlitagaiqsnhvrqtaavaaklglhcvallenpigttaenyltngnrllld
lfntqiemcdaltdpdaqlqtlatrieaqgfrpyvipvggssalgamgyvesaleiaqqc
eevvglssvvvasgsagthaglavglehlmpdveligvtvsrsvaeqkpkvialqqaiag
qlaltatadihlwddyfapgygvpndagmeavkllaslegvlldpvytgkamaglidgis
qkrfnddgpilfihtggapalfayhphv