Secondary structure elements and the structure topology of CsTegu20.6 were analyzed using ProFunc . The deconSTRUCT  and DALI  were employed to detect the aligned regions of proteins based on structural similarities. The oligomeric state of the structure was predicted using GalaxyGemini , with subsequent energy minimization. All structure visualization was performed using UCSF Chimera  and PyMOL v.099rc6 (http://www.pymol.org).