>1r55A (A:) observed residues (from ATOM records) trkylelyivadhtlfltrhrnlqhtkqrllevanyvdqllrtldiqvaltglevwterd rsrvtqdanatlwaflqwrrglwaqrphdsaqlltgrafqgatvglapvegmcraessgg vstdhselpigaaatmaheighslglshdpdgccveaaaesggcvmaaatghpfprvfsa csrrqlraffrkgggaclsnaps