>3atfA (A:) observed residues (from ATOM records)
qryvrkdgkcnvhhgnvrtlvfsthavismrdgklclmfrvgdlrnshiveasiraklik
skqtsegefiplnqtdinvgyytgddrlflvspliisheinqqspfweiskaqlpkeele
ivvilegmveatgmtcqarssyitseilwgyrftpvltledgfyevdynsfhetyetstp
slsakelaelanr