>2xrxB (B:) observed residues (from ATOM records) ffktfewpskaaglelqneieqfyyreaqlldhrayeawfalldkdihyfmplrtnrmir egeleysgdqdlahfdethetmygrirkvtsdvgwaenppsrtrhlvsnvivketatpdt fevnsafilyrnrlerqvdifagerrdvlrradnnlgfsiakrtilldastllsnnlsmf f