>2b4rP (P:) observed residues (from ATOM records)
atklgingfgrigrlvfraafgrkdievvaindpfmdlnhlcyllkydsvhgqfpcevth
adgflligekkvsvfaekdpsqipwgkcqvdvvcestgvfltkelasshlkggakkvims
appkddtpiyvmginhhqydtkqlivsnascttnclaplakvindrfgiveglmttvhas
tanqlvvdgpskggkdwragrcalsniipastgaakavgkvlpelngkltgvafrvpigt
vsvvdlvcrlqkpakyeevaleikkaaegplkgilgytedevvsqdfvhdnrssifdmka
glalndnffklvswydnewgysnrvldlavhitt