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

Affinity chromatography of bull seminal proteins on mannan-Sepharose.

The interaction of bull seminal plasma proteins and sperm with mannan was investigated using an enzyme-linked binding assay (ELBA). A high mannan-binding activity was found in the protein fraction interacting with heparin. Mannan binding to seminal plasma proteins was inhibited by D-mannose and D-fructose, but not by D-mannose-6-phosphate, D-glucose-6-phosphate, ovalbumin and ovomucoid. Mannan inhibited the binding of bovine zona pellucida glycoproteins both to bull sperm and seminal plasma proteins. Yeast mannan immobilized to divinyl sulfone-activated Sepharose was used for the isolation of mannan-binding proteins. The protein components of this fraction were identified on the basis of relative molecular mass determination and N-terminal amino acid sequencing: RNAase dimer, PDC-109 and a protein homologous to BSP-30K (relative molecular mass 14,500). The isolated proteins were characterized by a high zona pellucida binding activity.[1]


  1. Affinity chromatography of bull seminal proteins on mannan-Sepharose. Liberda, J., Ryslavá, H., Jelínková, P., Jonáková, V., Tichá, M. J. Chromatogr. B Analyt. Technol. Biomed. Life Sci. (2002) [Pubmed]
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