>1xn1H (H:) observed residues (from ATOM records) sfkiafiqarwhadivdearksfvaelaaktggsveveifdvpgayeiplhaktlartgr yaaivgaafvidggiyrhdfvatavingmmqvqletevpvlsvvltphhfheskehhdff hahfkvkgveaahaalqivsersria