The crystal structure of ybgI from E. coli. (A) Stereo view of the secondary structure cartoon showing the fold of the polypeptide chain. Domain 1 is shown with helices in blue and ß-strands in red and domain 2 is shown with helices in cyan and ß-strands in rose. The strands and helices are numbered sequentially from the N-terminus. This figure was prepared using MOLSCRIPT  and Raster3D [32, 33]. (B) Topology diagram of the secondary structure. Helicies are represented as rectangles and ß-strands are represented as arrows.