Overall parameters obtained by SAXS.

Rg, Dmax and Vp are, respectively, radius of gyration, maximum size and excluded particle volume obtained from experimental SAXS profiles. MMest is the molecular mass estimated from the excluded volume (using empiric factor of 0.625) and MMmon is the molecular mass expected from monomeric sequence (or equimolar monomeric assemblies in case of binary and ternary complexes) with glycosylation taken into account. Oligomeric state is defined by the ratio of MMest to MMmon. χ is discrepancy between the experimental SAXS data and the curve computed by CRYSOL from the rigid body model of corresponding construct with tentatively added carbohydrates.