>2b4rQ (Q:) observed residues (from ATOM records)
atklgingfgrigrlvfraafgrkdievvaindpfmdlnhlcyllkydsvhgqfpcevth
adgflligekkvsvfaekdpsqipwgkcqvdvvcestgvfltkelasshlkggakkvims
appkddtpiyvmginhhqydtkqlivsnascttnclaplakvindrfgiveglmttvhas
tanqlvvdgpskggkdwragrcalsniipastgaakavgkvlpelngkltgvafrvpigt
vsvvdlvcrlqkpakyeevaleikkaaegplkgilgytedevvsqdfvhdnrssifdmka
glalndnffklvswydnewgysnrvldlavhitt