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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

A sperm-agglutinating lectin from seeds of Jack fruit (Artocarpus heterophyllus).

A lectin specific for N-acetylgalactosamine was isolated from seed extract of Jack fruit (Artocarpus heterophyllus) by ammonium sulfate precipitation, followed by affinity chromatography on a Affigel-galactosamine-agarose column. The lectin possessed agglutinating activities for human and rat sperm as well as human red blood cells. It was found to have Mr = 62,000 consisting of two dissimilar subunits of Mr = 18,000 and 13,000. It also cross-reacted with an antibody against the lectin of Osage Orange (Maclura pomifera).[1]


  1. A sperm-agglutinating lectin from seeds of Jack fruit (Artocarpus heterophyllus). Namjuntra, P., Muanwongyathi, P., Chulavatnatol, M. Biochem. Biophys. Res. Commun. (1985) [Pubmed]
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