Summary
Evidence is provided for the occurrence of lectins (phytohemagglutinins) in the sieve-tube sap of Robinia pseudoacacia L. The most potent sugars found to inhibit the complex formation of the soluble protein with rabbit erythrocytes were N-acetyl-galactosamine and glycosides containing galactose. Sucrose and inositol had weaker effects. The extract of the membraneous material present in the sieve-tube sap also contains lectins, but the sugar specifity is different.
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Kauss, H., Ziegler, H. Carbohydrate-binding proteins from the sieve-tube sap of Robinia pseudoacacia L.. Planta 121, 197–200 (1974). https://doi.org/10.1007/BF00388759
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DOI: https://doi.org/10.1007/BF00388759