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XB-ART-47018
J Cell Biol 1986 Nov 01;1035:1721-7.
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Topography of N-CAM structural and functional determinants. I. Classification of monoclonal antibody epitopes.

Watanabe M , Frelinger AL , Rutishauser U .


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12 distinct neural cell adhesion molecule (N-CAM) epitopes, each recognized by a different monoclonal antibody (mAb), have been characterized in terms of the major structural and functional features of the molecule. Seven antibodies, each recognizing the amino-terminal region of the molecule, altered the rate of N-CAM-mediated adhesion. Four of these were inhibitors, two of which also recognized a heparin-binding N-CAM fragment. The other three antibodies specifically enhanced the rate of N-CAM-mediated adhesion. Three epitopes, one polypeptide- and two carbohydrate-dependent, were associated with the sialic acid-rich central portion of the molecule. The remaining two antibodies were found to react with intracellular determinants, and are specific for the largest of the three major N-CAM polypeptide forms. Studies on the ability of one antibody to hinder recognition of native N-CAM by another antibody suggested that the epitopes associated with N-CAM binding functions are in close proximity compared with the other determinants. The classification of these mAb epitopes has allowed the topographical placement of key N-CAM features, as described in the following paper, and provides valuable probes for analysis of both the structure and function of N-CAM.

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Species referenced: Xenopus
Genes referenced: ncam1
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References [+] :
Brodeur, Parameters affecting ascites tumour formation in mice and monoclonal antibody production. 1984, Pubmed