Some structural and functional aspects of the cell adhesion molecule uvomorulin

Vestweber, D; Kemler, R

doi:10.1016/0045-6039(84)90084-8

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Some structural and functional aspects of the cell adhesion molecule uvomorulin

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Vestweber, D
Kemler Group, Friedrich Miescher Laboratory, Max Planck Society;

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Kemler, R
Kemler Group, Friedrich Miescher Laboratory, Max Planck Society;

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Citation

Vestweber, D., & Kemler, R. (1984). Some structural and functional aspects of the cell adhesion molecule uvomorulin. Cell Differentiation, 15(2-4), 269-273. doi:10.1016/0045-6039(84)90084-8.

Cite as: https://hdl.handle.net/21.11116/0000-000C-0586-7

Abstract

The cell adhesion molecule uvomorulin (UM) was analysed by comparing antisera produced against the whole molecule (gp123) with antisera made against fragments of UM. Of the proteins recognized by different anti-UM antisera (molecular weights of 123, 102, 92 and 84 kDa), the 102 kDa molecule is not derived from gp123. The 102 kDa molecule is not glycosylated and is also different from gp123 by peptide map analysis. However, rabbit antisera raised against the purified 102 kDa protein interfered with the aggregation of embryonal carcinoma (EC) cells. Also, a monoclonal antibody selected to interfere with EC cell aggregation recognized the 102 kDa molecule as well as gp123. Thus, the functional site of cell adhesion seems not to be mediated by sugar residues. Experimental evidence is provided suggesting that UM is not only involved in the compaction of preimplantation embryos but seems to be an ubiquitous cell adhesion molecule regulating epithelial cell adhesion mechanisms.