Rv3494c protein structure prediction: (A) Ramachandran plot obtained using Swiss Model software. (B) 3D model of the protein: the β-sheets are drawn as yellow arrows and the helixes are shown in red. The coloured helix (amino acids 12–34) is the transmembrane helix predicted signal peptide. (C) Structural prediction using the Robetta server; a red X indicates the presence of helixes and a blue X the β-sheets.