>4xkdB (B:) observed residues (from ATOM records)
gifgaiagfieggwtgmidgwygyhhensqgsgyaadrestqkaidgitnkvnsiinkmn
tqfeavdhefsnlerrignlnkrmedgfldvwtynaellvllenertldlhdanvknlye
kvksqlrdnandlgngcfefwhkcdnecmesvkngtydypkyqkesklnrqg