- Research news
- Open Access
Genome Biology volume 1, Article number: spotlight-20001211-01 (2000)
In the 7 December Nature Grimson et al. report that, like metazoans, the slime mold Dictyostelium discoideum has a β-catenin involved both in signaling and in forming adherens junctions (Nature 2000, 408:727-731). The junctions form after the unicellular amoebae are starved and aggregate into a fruiting body, with junctions present only between cells at a constriction near the top of the stalk tube. In mutants lacking the β-catenin, most of the fruiting bodies collapse, and there is an additional signaling defect: a cell-autonomous failure to induce certain aspects of prespore gene expression. The existence of the Dictyostelium protein and a related protein in the plant Arabidopsis thaliana suggest that evolution of β-catenin may have been a prerequisite for all multicellular development.
Functional interaction of beta-catenin with the transcription factor LEF-1.
The molecular constituents of intercellular junctions.
About this article
Cite this article
Wells, W. Slimy catenins. Genome Biol 1, spotlight-20001211-01 (2000) doi:10.1186/gb-spotlight-20001211-01
- Gene Expression
- Arabidopsis Thaliana
- Fruiting Body
- Related Protein
- Adherens Junction