Drosophila fasciclin I is a novel homophilic adhesion molecule that along with fasciclin III can mediate cell sorting

Thomas Elkins, Michael Hortsch, Allan J. Bieber, Peter M. Snow, Corey S. Goodman

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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.

Original languageEnglish (US)
Pages (from-to)1825-1832
Number of pages8
JournalJournal of Cell Biology
Issue number5
StatePublished - May 1990


ASJC Scopus subject areas

  • Cell Biology

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