>1zz7B (B:) observed residues (from ATOM records)
astgfaellkdrreqvkmdhaalasllgetpetvaawengeggeltltqlgriahvlgts
igaltppagndlddgviiqmpyvynclvrtkrapslvplvvdvltdnpddakfnsghagn
eflfvlegeihmkwgnpkeallptgasmfveehvphaftaakgtgsakliavnf