Crosslinking of Cys-Mutated Human Galectin-1 to the Model Glycoprotein Ligands Asialofetuin and Laminin by Using a Photoactivatable Bifunctional Reagent
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Galectins are a group of animal lectins characterized by their specificity for β-galactosides. In our previous study, we showed that a human galectin-1 (hGal-1) mutant, in which a cysteine residue was introduced at Lys28, forms a covalently cross-linked complex with the model glycoprotein ligands asialofetuin and laminin by using the photoactivatable sulfhydryl reagent benzophenone-4-maleimide (BPM). In the present study, we used several hGal-1 mutants in which single cysteine residues were introduced at different positions and examined their ability to form a covalent complex with asialofetuin or laminin by using BPM. We found that the efficiency of formation of the cross-linked products differed depending on the positions of the cysteine introduced and also on the ligand used for crosslinking. Therefore, by using different cysteine hGal-1 mutants, the chances of isolating different ligands for hGal-1 should increase depending on the systems and cells used.
- 公益社団法人 日本薬学会の論文
公益社団法人 日本薬学会 | 論文
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