Purity ≥98% by SDS-PAGE gel and HPLC analyses. Endotoxin:≤0.1ng/ug (≤1EU/ug). Lectins, of either plant or animal origin, are carbohydrate binding proteins that interact with glycoprotein and glycolipids on the surface of animal cells.The Galectins are lectins that recognize and interact with beta-galactoside moieties.Galectin-1 is an animal lectin that has been shown to interact with CD3, CD4, and CD45.It induces apoptosis of activated T-cells and T-leukemia cell lines and inhibits the protein phosphatase activity of CD45.Recombinant human Galectin-1 is a 14.5kD protein containing 134 amino acid residues. Biological Activity: Determined by its ability to chemoattract human blood monocytes. Chemotactic activity was observed at a concentration of 2.5ug/ml with a peak response obtained at 250ug/ml. AA Sequence: ACGLVASNLNLKPGECLRVRGEVAPDAKSFVLNLGKDSNNLCLHFNPRFNAHGDANTIVCNSKDGGAWGTEQREAVFPFQPGSVAEVCITFDQANLTVKLPDGYEFKFPNRLNLEAINYMAADGDFKIKCVAFD Quality Control: Verified by N-terminal and