Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2019 Sep 3:2019:10.17912/micropub.biology.000159.
doi: 10.17912/micropub.biology.000159.

Identification of four Drosophila Toll-related proteins as ligands for the PTP69D receptor tyrosine phosphatase

Affiliations

Identification of four Drosophila Toll-related proteins as ligands for the PTP69D receptor tyrosine phosphatase

Namrata Bali et al. MicroPubl Biol. .
No abstract available

PubMed Disclaimer

Figures

Figure 1. Toll-2, Toll-6, Toll-7 and Toll-8 bind to PTP69D
Figure 1. Toll-2, Toll-6, Toll-7 and Toll-8 bind to PTP69D
(A) Binding patterns of Toll-2 AP, Toll-6 AP, Toll-7 AP and Toll-8 AP fusion proteins in wild type embryos. ai-aiv show double staining for FasII (green) and Toll-x AP (red). In ai’-aiv’ only the AP signal is shown, in white. All four fusion proteins show a similar binding pattern in the CNS with AP staining seen in longitudinal CNS axons, junctions between the longitudinal and the commissural tracts (yellow arrowheads), and in the posterior commissure (white arrows). Weak binding is also seen in the anterior commissure and in motor axons leaving the CNS. (B) Toll-2, Toll-6, Toll-7 and Toll-8 bind to overexpressed PTP69D. Wild type embryos (bi – biv) and embryos with overexpressed PTP69D (bi’ – biv’) were incubated with Toll-2 AP, Toll-6 AP, Toll-7 AP and Toll-8 AP fusion proteins. Here only the AP signal is shown, with black and white reversed relative to (a), so that AP staining is black. Embryos with ectopic PTP69D show increased binding of AP fusion proteins compared to wild type embryos. (C) PTP69D binds to overexpressed Toll-8. Wild type embryos (ci) and embryos with ectopic Toll-8 (cii) were incubated with PTP69D-AP fusion protein. Embryos with overexpressed Toll-8 show increased binding by PTP69D-AP (black) both in the CNS and in the periphery. Scale bars, 10µm.

References

    1. Bali N, Lee HK, Zinn K. Live Staining of Drosophila Embryos with RPTP Fusion Proteins to Detect and Characterize Expression of Cell-Surface RPTP Ligands. Methods Mol Biol. 2016;1447:373–384. doi: 10.1007/978-1-4939-3746-2_20. - DOI - PubMed
    1. Ballard SL, Miller DL, Ganetzky B. Retrograde neurotrophin signaling through Tollo regulates synaptic growth in Drosophila. J Cell Biol. 2014 Mar 24;204(7):1157–1172. doi: 10.1083/jcb.201308115. - DOI - PMC - PubMed
    1. Fox AN, Zinn K. The heparan sulfate proteoglycan syndecan is an in vivo ligand for the Drosophila LAR receptor tyrosine phosphatase. Curr Biol. 2005 Oct 11;15(19):1701–1711. doi: 10.1016/j.cub.2005.08.035. - DOI - PubMed
    1. Lee HK, Cording A, Vielmetter J, Zinn K. Interactions between a receptor tyrosine phosphatase and a cell surface ligand regulate axon guidance and glial-neuronal communication. Neuron. 2013 Jun 01;78(5):813–826. doi: 10.1016/j.neuron.2013.04.001. - DOI - PMC - PubMed
    1. Lee HK, Wright AP, Zinn K. Live dissection of Drosophila embryos: streamlined methods for screening mutant collections by antibody staining. J Vis Exp. 2009 Dec 29;(34) doi: 10.3791/1647. - DOI - PMC - PubMed

LinkOut - more resources