>2otxB (B:) observed residues (from ATOM records) peeirnlladvetfvadtlkgenlskkakekreslikkikdvksvylqefqfppiaaqdl pfvikagylekrrkdhsflgfewqkrwcalsktvfyyygsdkdkqqkgefaidgydvrmn ntlrkdgkkdccfeicapdkriyqftaaspkdaeewvqqlkfilqdlg