>4by5B (B:) observed residues (from ATOM records)
nsklkqdtidrlttdtyftekeirqwhkgflkdcpngllteqgfikiykqffpdgdpskf
aslvfrvfdenndgaiefeefiralsitsrgnldeklhwafrlydvdndgyitreemyni
vdaiyqmvgqqpqtedentpqkrvdkifdqmdknhddrltleefregskadprmvqalsl