>3twwA (A:) observed residues (from ATOM records)
gnseadrqlleaakagdvetvkklctvqsvncrdiegrqstplhfaagynrvsvveyllq
hgadvhakdkgglvplhnacsyghyevaellvkhgavvnvadlwkftplheaaakgkyei
cklllqhgadptkknrdgntpldlvkdgdtdiqdllr