Fig. 4From: Structural characterization of the carbohydrate-binding module of NanA sialidase, a pneumococcal virulence factor3’SL and 6’SL co-complexed with SpCBM. a Stereo view of Fo-Fc map of 3’SL co-complex contoured at 2.5σ level. b Stereo view of Fo-Fc map of 6’SL co-complex contoured at 2.5σ level. c Stereo view of 3’SL (shown in spheres) bound to the SpCBM substrate-binding siteBack to article page