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Xu, S., Xiao, Q., Cosmanescu, F., Sergeeva, A.P., Yoo, J., Lin, Y., Katsamba, P.S., Ahlsen, G., Kaufman, J., Linaval, N.T., Lee, P.T., Bellen, H.J., Shapiro, L., Honig, B., Tan, L., Zipursky, S.L. (2018). Interactions between the Ig-Superfamily Proteins DIP-α and Dpr6/10 Regulate Assembly of Neural Circuits.  Neuron 100(6): 1369--1384.e6.
FlyBase ID
FBrf0241076
Publication Type
Research paper
Abstract

Drosophila Dpr (21 paralogs) and DIP proteins (11 paralogs) are cell recognition molecules of the immunoglobulin superfamily (IgSF) that form a complex protein interaction network. DIP and Dpr proteins are expressed in a synaptic layer-specific fashion in the visual system. How interactions between these proteins regulate layer-specific synaptic circuitry is not known. Here we establish that DIP-α and its interacting partners Dpr6 and Dpr10 regulate multiple processes, including arborization within layers, synapse number, layer specificity, and cell survival. We demonstrate that heterophilic binding between Dpr6/10 and DIP-α and homophilic binding between DIP-α proteins promote interactions between processes in vivo. Knockin mutants disrupting the DIP/Dpr binding interface reveal a role for these proteins during normal development, while ectopic expression studies support an instructive role for interactions between DIPs and Dprs in circuit development. These studies support an important role for the DIP/Dpr protein interaction network in regulating cell-type-specific connectivity patterns.

PubMed ID
PubMed Central ID
PMC7501880 (PMC) (EuropePMC)
Related Publication(s)
Note

DIPping into the Fly Visual System.
Aksu and Seiradake, 2018, Neuron 100(6): 1270--1272 [FBrf0241167]

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Secondary IDs
    Language of Publication
    English
    Additional Languages of Abstract
    Parent Publication
    Publication Type
    Journal
    Abbreviation
    Neuron
    Title
    Neuron
    Publication Year
    1988-
    ISBN/ISSN
    0896-6273
    Data From Reference
    Aberrations (5)
    Alleles (47)
    Genes (13)
    Natural transposons (2)
    Insertions (10)
    Experimental Tools (3)
    Transgenic Constructs (27)