>4h31A (A:) observed residues (from ATOM records)
namafnlrnrnflklldfstkeiqflidlsadlkkakyagteqkkllgknialifekast
rtrcafevaafdqgaqvtyigpsgsqigdkesmkdtarvlgrmydgiqyrgfgqaiveel
gafagvpvwngltdefhptqiladfltmlehsqgkaladiqfaylgdarnnvgnslmvga
akmgmdirlvgpqaywpdeelvaacqaiakqtggkitltenvaegvqgcdflytdvwvsm
gespeawdervalmkpyqvnmnvlkqtgnpnvkfmhclpafhndettigkqvadkfgmkg
levteevfesehsivfdeaenrmhtikavmvatlg