>3nrpB (B:) observed residues (from ATOM records)
gfkeypagepvtmnemelaavylqpidmeprgglpaakadvhleadihavegnkngfgag
ewipyltisytlvnndtgekqegtfmpmvasdgphyganikmmgvgnykvtyhieppska
gmhrhtdsetgvgrwwkpfdvsyefkyvgln