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  • Title: Structural comparisons of two allelic variants of human placental alkaline phosphatase.
    Author: Millán JL, Stigbrand T, Jörnvall H.
    Journal: Int J Biochem; 1985; 17(10):1033-9. PubMed ID: 3934008.
    Abstract:
    A simple immunosorbent purification scheme based on monoclonal antibodies has been devised for human placental alkaline phosphatase. The two most common allelic variants, S and F, have similar amino acid compositions with identical N-terminal amino acid sequences through the first 13 residues. Both variants have identical lectin binding properties towards concanavalin A, lentil-lectin, wheat germ agglutinin, phytohemagglutinin and soybean agglutinin, and identical carbohydrate contents as revealed by methylation analysis. CNBr fragments of the variants demonstrate identical high performance liquid chromatography patterns. The carbohydrate containing fragment is different from the 32P-labeled active site fragment and the N-terminal fragment.
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