>4rf1A (A:) observed residues (from ATOM records)
ltievlvtvdgvnfrtvvlnnkntyrsqlgcvffngadisdtipdekqnghslyladnlt
adetkalkelygpvdptflhrfyslkaavhgwkmvvcdkvrslklsdnncylnavimtld
llkdikfvipalqhafmkhkggdstdfialimaygnctfgapddasrllhtvlakaelcc
sarmvwrewcnvcgikdvvlqglkaccyvgvqtvedlrarmtyvcqcggerhrqlvehtt
pwlllsgtpneklvttstapdfvafnvfqgietavghyvharlklilkfdsgtvsktsdw
kckvtdvlfpgqkyssdcn