>4topA (A:) observed residues (from ATOM records)
sdevvlldfwpspfgmrvrialaekgikyeykeedlrnksplllqmnpvhkkipvlihng
kpicesliavqyieevwndrnpllpsdpyqraqtrfwadyvdkkiydlgrkiwtskgeek
eaakkefiealklleeqlgdktyfggdnlgfvdialvpfytwfkayetfgtlniesecpk
fiawakrclqkesvakslpdqqkvyefimdlrkklgie