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

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Control of L5178y cell growth by the galactose-specific lectin from Geodia cydonium.

The galactose-specific lectin from the sponge Geodia cydonium was determined to cause an increase of the growth rate of L5178y mouse lymphoma cells. The lectin interacts with cell surface components which were solubilized and enriched by affinity chromatography; their Mr's were 170,000, 140,000 and 88,000. Results from Ouchterlony diffusion studies suggest that the cell surface ligand is monovalent. Given to cells in suspension, the lectin causes cell agglutination. This process could be abolished by coincubation with the soluble cell surface ligand. Plating the cells onto substrate-attached lectin resulted in a stimulation of cell spreading. Scatchard analyses revealed that L5178y cells contained 6.3 X 10(7) lectin binding sites with an affinity (Ka) of 1.7 X 10(7) M-1. The binding of the Geodia lectin to the cell surface can be prevented by addition of horse serum. The blocking serum components were isolated by affinity chromatography and determined to consist of six protein species.[1]

References

  1. Control of L5178y cell growth by the galactose-specific lectin from Geodia cydonium. Diehl-Seifert, B., Zahn, R.K., Uhlenbruck, G., Maidhof, A., Müller, W.E. Basic and applied histochemistry. (1985) [Pubmed]
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