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Figure 1
(a) Quality of the electron-density map. The refined structure is represented by a thin wire. The map is contoured at the 1.0σ level. (b) Stereo diagram of the APE2540 protein. The secondary structures are coloured blue (α-helices) and red (β-strands). (c) Comparison of the structural homologues of the APE2540 protein. The three structures are coloured and oriented in the same direction as in Fig. 1 ![]() ![]() ![]() |