Soybean Genetics Newsletter


Soybeans [Glycine max (L.) Merr .] contain at least four glycoproteins that are capable of clumping red blood cells (Catsimpoolas and Meyer, 1969; Lis et al. 1966 ; Rackis et al. 1959; Stead et al. 1966). These glycoproteins are called lectins. The lectin content in defatted soybean meal is about 3% (Liener and Rose, 1953). The major lectin in soybean seed, termed soybean lectin (SBL), has a molecular weight of 120,000 and specificity for D-galactose and N-acetyl-D-galactosamine (Bhuvaneswari et al. 1977; Lotan et al. 1974).