>1ck4B (B:) observed residues (from ATOM records)
tqldivivldgsnsiypwesviaflndllkrmdigpkqtqvgivqygenvthefnlnkys
steevlvaankigrqgglqtmtalgidtarkeafteargarrgvkkvmvivtdgeshdny
rlkqviqdcedeniqrfsiailghynrgnlstekfveeiksiaseptekhffnvsdelal
vtivkalgerifale