>4ax0B (B:) observed residues (from ATOM records)
asrgcaddagwndpamplkvygntwyvgtcgisallvtsdaghilvdaatpqagpqilan
iralgfrpedvraivfshehfdhagslaelqkatgapvyarapaidtlkrglpdrtdpaf
evaepvapvanivtladdgvvsvgplaltavaspghtpggtswtwrscegddcrqmvyad
sltaisddvfrysddaahpgylaafrntlarvaaldcdilvtphpsasglwnrigpraaa
plmdttacrryaqgarqrlekrlaeeaats