Structural definition of hSP-D recognition of Salmonella enterica LPS inner core oligosaccharides reveals alternative binding modes for the same LPS
Fig 4
Electron density for the Salmonella enterica oligosaccharides bound to rfhSP-D (subunit B) with HepI in the Ca1 binding site.
The calcium ion is in green and the four calcium and ligand coordinating residues Glu321, Asn323, Glu329 and Asn341 are shown in cpk. (a) R7 oligosaccharide KdoI (anhydro)-HepI-HepII (b) R5 oligosaccharide KdoI (anhydro)-HepI-HepII-Glc1. Maps are 2mFo-DFc contoured at 1σ.