Potter M, Lieberman R
J Exp Med. 1970 Oct 1;132(4):737-51. doi: 10.1084/jem.132.4.737.
Eight IgA myeloma proteins derived from independently induced plasma-cytomas in genetically similar inbred BALB/c mice are functionally related by their binding of phosphoryl choline-containing antigens (Pneumococcus C polysaccharide or Lactobacillus antigen). Each protein resembles a single species of immunoglobulin in antibody. The proteins are characterized by highly sensitive myeloma-specific antisera prepared by immunizing mice of other inbred strains with the BALB/c myeloma proteins. Individual or myeloma-specific determinants located on Fab fragments were found on three of the proteins that were unique for that protein and did not react with any other IgA protein among over 70 tested. Remarkably, five of the proteins shared two common myeloma-specific determinants which were specific for this group of five proteins. These results suggest that the five functionally and genetically related proteins sharing the same myeloma-specific determinants might also be structurally similar.
从基因相似的近交系BALB/c小鼠中独立诱导产生的浆细胞瘤衍生出的8种IgA骨髓瘤蛋白,通过它们与含磷酸胆碱抗原(肺炎球菌C多糖或乳酸杆菌抗原)的结合而在功能上相关。每种蛋白在抗体方面类似于单一物种的免疫球蛋白。这些蛋白的特征在于通过用BALB/c骨髓瘤蛋白免疫其他近交系小鼠制备的高度敏感的骨髓瘤特异性抗血清。在其中三种蛋白上发现了位于Fab片段上的个体或骨髓瘤特异性决定簇,这些决定簇是该蛋白所特有的,并且在超过70种测试的IgA蛋白中不与任何其他IgA蛋白发生反应。值得注意的是,其中五种蛋白共享两个共同的骨髓瘤特异性决定簇,这些决定簇是这一组五种蛋白所特有的。这些结果表明,共享相同骨髓瘤特异性决定簇的这五种功能和基因相关的蛋白在结构上可能也相似。