>2xrxR (R:) observed residues (from ATOM records) ffktfewpskaaglelqneieqfyyreaqlldhrayeawfalldkdihyfmplrtnrmir egeleysgdqdlahfdethetmygrirkvtsdvgwaenppsrtrhlvsnvivketatpdt fevnsafilyrnrlerqvdifagerrdvlrradnnlgfsiakrtilldastllsnnlsmf f