FIGURE 2.

Solution structure of Rv1739c STAS. A, backbone representation (superimposed on N, C^α, and C′ atoms) of an ensemble of the 25 lowest energy conformers of Rv1739c STAS. B, representative Rv1739c STAS conformer comprises a four-stranded β-sheet with five α-helices. The positions of the backbone and all heavy atoms exhibit root mean square deviation values of 0.87 ± 0.17 and 1.36 ± 0.24 Å, respectively, relative to the mean structure (Table 1). 98.1% of all residues occupy favorable or allowed regions within the Ramachandran map.