>1n4sA (A:) observed residues (from ATOM records)
flsldsptyvlyrdraewadidpvpqndgpspvvqiiysekfrdvydyfravlqrderse
rafkltrdaielnaanytvwhfrrvllrslqkdlqeemnyiiaiieeqpknyqvwhhrrv
lvewlkdpsqelefiadilnqdaknyhawqhrqwviqefrlwdnelqyvdqllkedvrnn
svwnqrhfvisnttgysdravlerevqytlemiklvphnesawnylkgilqdrglsrypn
llnqlldlqpshsspyliaflvdiyedmlenqcdnkedilnkalelceilakekdtirke
ywryigrslqskhs