[Lectin-binding proteins of plasma membranes of a human trophoblast]

Spectra of lectin-binding proteins of the human trophoblast were studied by the method affinity blotting using a set of loctins conjugated with peroxidase. The set included lectins Lens culinaris (LcL), Canavalia ensiformis (Con A), Ricinus communis (RCA 1), Arachis hypogaea (PNA), Triticum vulgaris (WGA), Laburnum anagyroides (LAL). Presence of N- and O-glycans in the composition of proteins of plasmatic membranes of a trophoblast was shown, partial characteristics of their oligosugar chains being presented. Sialic acids were established to be absent in the composition of alkaline phosphatase of mature placenta.