>4d99B (B:) observed residues (from ATOM records)
hhltrfprlefigaptpleylprlsdylgreiyikrddvtpiamggnklrkleflvadal
regadtlitagaiqsnhvrqtaavaaklglhcvallenpigttaenyltngnrllldlfn
tqiemcdaltdpdaqlqtlatrieaqgfrpyvipvggssalgamgyvesaleiaqqceev
glssvvvasgsagthaglavglehlmpdveligvtvsrsvaeqkpkvialqqaiagqlal
tatadihlwddyfapgygvpndagmeavkllaslegvlldpvytgkamaglidgisqkrf
nddgpilfihtggapalfayhphv