Crystal structure of Dpr11 IG1 bound to DIP-gamma IG+IG2

Experimental Data Snapshot

  • Resolution: 2.50 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.210 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report

This is version 2.1 of the entry. See complete history


Molecular basis of synaptic specificity by immunoglobulin superfamily receptors in Drosophila.

Cheng, S.Ashley, J.Kurleto, J.D.Lobb-Rabe, M.Park, Y.J.Carrillo, R.A.Ozkan, E.

(2019) Elife 8

  • DOI: https://doi.org/10.7554/eLife.41028
  • Primary Citation of Related Structures:  
    6NRQ, 6NRR, 6NRW, 6NRX, 6NS1

  • PubMed Abstract: 

    In stereotyped neuronal networks, synaptic connectivity is dictated by cell surface proteins, which assign unique identities to neurons, and physically mediate axon guidance and synapse targeting. We recently identified two groups of immunoglobulin superfamily proteins in Drosophila , Dprs and DIPs, as strong candidates for synapse targeting functions. Here, we uncover the molecular basis of specificity in Dpr-DIP mediated cellular adhesions and neuronal connectivity. First, we present five crystal structures of Dpr-DIP and DIP-DIP complexes, highlighting the evolutionary and structural origins of diversification in Dpr and DIP proteins and their interactions. We further show that structures can be used to rationally engineer receptors with novel specificities or modified affinities, which can be used to study specific circuits that require Dpr-DIP interactions to help establish connectivity. We investigate one pair, engineered Dpr10 and DIP-α, for function in the neuromuscular circuit in flies, and reveal roles for homophilic and heterophilic binding in wiring.

  • Organizational Affiliation

    Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, United States.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Defective proboscis extension response 11, isoform B114Drosophila melanogasterMutation(s): 0 
Gene Names: 
Find proteins for Q8MRE6 (Drosophila melanogaster)
Explore Q8MRE6 
Go to UniProtKB:  Q8MRE6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8MRE6
Sequence Annotations
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Dpr-interacting protein gamma213Drosophila melanogasterMutation(s): 0 
Gene Names: DIP-gamma14521anon-WO0140519.196CT34248Dmel\CG14521CG14521Dmel_CG14521
Find proteins for Q9VAR6 (Drosophila melanogaster)
Explore Q9VAR6 
Go to UniProtKB:  Q9VAR6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9VAR6
Glycosylation Sites: 1Go to GlyGen: Q9VAR6-1
Sequence Annotations
  • Reference Sequence


Entity ID: 3
MoleculeChains Length2D Diagram Glycosylation3D Interactions
Glycosylation Resources
GlyTouCan:  G32152BH
GlyCosmos:  G32152BH
GlyGen:  G32152BH
Experimental Data & Validation

Experimental Data

Unit Cell:
Length ( Å )Angle ( ˚ )
a = 85.364α = 90
b = 85.364β = 90
c = 103.584γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XDSdata scaling

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)United StatesR01 NS097161

Revision History  (Full details and data files)

  • Version 1.0: 2019-02-06
    Type: Initial release
  • Version 1.1: 2019-12-18
    Changes: Author supporting evidence, Data collection
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary
  • Version 2.1: 2023-10-11
    Changes: Data collection, Database references, Derived calculations, Refinement description, Structure summary