Fasciclin I is a membrane-associated glycoprotein that is regionally expressed on a subset of fasciculating axons during neuronal development in insects; it is expressed on apposing cell surfaces, suggesting a role in specific cell adhesion. In this paper we show that Drosophila fasciclin I is a novel homophilic cell adhesion molecule. When the nonadhesive Drosophila S2 cells are transfected with the fasciclin I cDNA, they form aggregates that are blocked by antisera against fasciclin I. When cells expressing fasciclin I are mixed with cells expressing fasciclin III, another Drosophila homophilic adhesion molecule, the mixture sorts into aggregates homogeneous for either fasciclin I- or fasciclin III-expressing cells. The ability of these two novel adhesion molecules to mediate cell sorting in vitro suggests that they might play a similar role during neuronal development.
Drosophila fasciclin I is a novel homophilic adhesion molecule that along with fasciclin III can mediate cell sorting.
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T Elkins, M Hortsch, A J Bieber, P M Snow, C S Goodman; Drosophila fasciclin I is a novel homophilic adhesion molecule that along with fasciclin III can mediate cell sorting.. J Cell Biol 1 May 1990; 110 (5): 1825–1832. doi: https://doi.org/10.1083/jcb.110.5.1825
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