>3r4sB (B:) observed residues (from ATOM records)
smanindskilslqnrkntlvdtsgynaevseegdvqlnpifpfdfklgssgedrgkviv
tqnenivynsmyesfsisfwirinkwvsnlpgytiidsvknnsgwsigiisnflvftlkq
nedseqsinfsydisnnapgynkwffvtvtnnmmgnmkiyingklidtikvkeltginfs
ktitfeinkipdtgdsdninmwirdfyifakeldgkdinilfnslqytnvvkdywgndlr
ynkeyymvnidylnrymyansrqivfntrrnnndfnegykiiikrirgntndtrvrggdi
lyfdmtinnkaynlfmknetmyadnhstediyaiglreqtkdindniifqiqpmnntyyy
asqifksnfngenisgicsigtyrfrlggdwyrhnylvptvkqgnyaslleststhwgfv
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