>1q41B (B:) observed residues (from ATOM records)
skvttvvatpgqgpdrpqevsytdtkvigngsfgvvyqaklcdsgelvaikkvlqdkrfk
nrelqimrkldhcnivrlryffyssvylnlvldyvpetvyrvarhysrakqtlpviyvkl
ymyqlfrslayihsfgichrdikpqnllldpdtavlklcdfgsakqlvrgepnvsyicsr
yyrapelifgatdytssidvwsagcvlaelllgqpifpgdsgvdqlveiikvlgtptreq
iremnpnytefkfpqikahpwtkvfrprtppeaialcsrlleytptarltpleacahsff
delrdpnvklpngrdtpalfnfttqelssnpplatilipphar