>2freB (B:) observed residues (from ATOM records)
mtnsnnrqseypvdplfldrwsprafdgspmpkehlltildaahwapsasnhqpwrfvya
hkdsedwplfvellmegnqkwaknasvllfvisrdhtishegekkpsathsfdagaawfs
lamqahllgyhahgmggifkdrivekldipdgfkveagvaigtltdksilpddlaerevp
skrvpladvafegrftgk