Figure 1: Sequence alignment of cUNG (GI:7413914) and hUNG (GI:14767852). The structural elements of cUNG (PDB ID: 1OKB) are included above the sequence of cUNG. Residues that might improve the flexibility of the Leucine-loop (266, 267, 274, 275 and 279) of cUNG are marked with ▲ and the catalytic residues D145 and H268 are marked with *.