>4fxbB (B:) observed residues (from ATOM records)
prdfpifaapaeyaalrtddpvarvtlptrreawvvtryddvrellsdprvsadirrpgf
rpfirtdapehtryrrmllpaftvrrvramrpavqarvdeildgmlaaggpvdlvsayan
avstsvicellgiprhdleffrdvtrisgsraeqvsealgglfgllgglvaerreeprdd
lisklvtdhlvpgnvtteqllstlgitinagretttsmialstlllldrpelpaelrkdp
dlmpaavdellrvlsvadsiplrvaaedielsgrtvpaddgviallaganhdpeqfddpe
rvdfhrtdnhhvafgygvhqcvgqhlarlelevaletllrrvptlrlaerdqvvvkhdsa
tfgleelmvt