>1n4mB (B:) observed residues (from ATOM records)
ntiqqlmmilnsasdqpsenlisyfnnctvnpkesilkrvkdigyifkekfakavgagcv
aigsqryklgvrlyyrvmesmlkseeerlsiqnfskllndnifhmsllacalevvmatys
rsttdlsfpwilnvlnlkafdfykviesfikaegnltremikhlercehrimeslawlsd
splfdlikqsktregkstslslfykkvyrlaylrlntlcerllsehpelehiiwtlfqht
lqneyelmrdrhldqimmcsmygickvknidlkfkiivtaykdlphavqetfkrvlikee
eydsiivfynsvfmqrlktnilqyastrpptlspiphi