>2f4lB (B:) observed residues (from ATOM records)
hmkvvpaqrcvysfsanmapveevypgeqvvfetldalvnpatgpvfvngvkpgdtlkvr
ikrielprrgmivtgkgfgvlgdevegfhtkeleiekwavlfdgvripihpmvgvigvap
qegeyptgtahrhggnmdtkeitenvtvhlpvfqegallalgdvhatmgdgevcvsacev
pakvvveidvskeeikwpvvetndayyiivslpdieealkevtretvwfiqrrktipftd
aymlaslsvdvgisqlvnpaktakaripkyift