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Open data
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Basic information
Entry | Database: PDB / ID: 6vfp | ||||||||||||
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Title | Crystal structure of human protocadherin 1 EC1-EC4 | ||||||||||||
![]() | Protocadherin-1 | ||||||||||||
![]() | CELL ADHESION / cadherin extracellular region / non-clustered delta1 family protocadherin / homophilic adhesion/recognition calcium-dependent adhesion molecule | ||||||||||||
Function / homology | ![]() homophilic cell adhesion via plasma membrane adhesion molecules / cell junction / cell-cell junction / cell-cell signaling / nervous system development / cell adhesion / intracellular membrane-bounded organelle / calcium ion binding / nucleolus / nucleoplasm / plasma membrane Similarity search - Function | ||||||||||||
Biological species | ![]() | ||||||||||||
Method | ![]() ![]() ![]() | ||||||||||||
![]() | Brasch, J. / Harrison, O.J. / Shapiro, L. | ||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Family-wide Structural and Biophysical Analysis of Binding Interactions among Non-clustered δ-Protocadherins. Authors: Oliver J Harrison / Julia Brasch / Phinikoula S Katsamba / Goran Ahlsen / Alex J Noble / Hanbin Dan / Rosemary V Sampogna / Clinton S Potter / Bridget Carragher / Barry Honig / Lawrence Shapiro / ![]() Abstract: Non-clustered δ1- and δ2-protocadherins, close relatives of clustered protocadherins, function in cell adhesion and motility and play essential roles in neural patterning. To understand the ...Non-clustered δ1- and δ2-protocadherins, close relatives of clustered protocadherins, function in cell adhesion and motility and play essential roles in neural patterning. To understand the molecular interactions underlying these functions, we used solution biophysics to characterize binding of δ1- and δ2-protocadherins, determined crystal structures of ectodomain complexes from each family, and assessed ectodomain assembly in reconstituted intermembrane junctions by cryoelectron tomography (cryo-ET). Homophilic trans (cell-cell) interactions were preferred for all δ-protocadherins, with additional weaker heterophilic interactions observed exclusively within each subfamily. As expected, δ1- and δ2-protocadherin trans dimers formed through antiparallel EC1-EC4 interfaces, like clustered protocadherins. However, no ectodomain-mediated cis (same-cell) interactions were detectable in solution; consistent with this, cryo-ET of reconstituted junctions revealed dense assemblies lacking the characteristic order observed for clustered protocadherins. Our results define non-clustered protocadherin binding properties and their structural basis, providing a foundation for interpreting their functional roles in neural patterning. | ||||||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 203.8 KB | Display | ![]() |
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PDB format | ![]() | 133.1 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 330.2 KB | Display | ![]() |
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Full document | ![]() | 330.2 KB | Display | |
Data in XML | ![]() | 1.4 KB | Display | |
Data in CIF | ![]() | 5.6 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6vfqC ![]() 6vfrC ![]() 6vftC ![]() 6vfuC ![]() 6vfvC ![]() 6vfwC ![]() 6vg1C ![]() 6vg4C ![]() 4zplS ![]() 5dzqS S: Starting model for refinement C: citing same article ( |
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Similar structure data |
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Assembly
Deposited unit | ![]()
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1 | ![]()
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Unit cell |
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Components on special symmetry positions |
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Components
#1: Protein | Mass: 48914.965 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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#2: Polysaccharide | beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose Source method: isolated from a genetically manipulated source |
#3: Sugar | ChemComp-NAG / |
#4: Chemical | ChemComp-CA / |
#5: Water | ChemComp-HOH / |
Has ligand of interest | N |
Has protein modification | Y |
-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 4.99 Å3/Da / Density % sol: 75.34 % |
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Crystal grow | Temperature: 296 K / Method: vapor diffusion, hanging drop / pH: 8.5 Details: 8.5% (w/v) PEG 4000, 20% (v/v) glycerol, 0.1M tris-bicine buffer pH8.5, 0.02 M D-glucose, 0.02 M D-mannose, 0.02 M D-galactose, 0.02 M L-fucose, 0.02 M D-xylose, 0.02 M N-acetyl-D-glucosamine |
-Data collection
Diffraction | Mean temperature: 100 K / Serial crystal experiment: N |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: DECTRIS PILATUS 6M-F / Detector: PIXEL / Date: Apr 25, 2016 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.9791 Å / Relative weight: 1 |
Reflection | Resolution: 3.2→40 Å / Num. obs: 16684 / % possible obs: 100 % / Redundancy: 18.3 % / Biso Wilson estimate: 115.50962728 Å2 / CC1/2: 1 / Rmerge(I) obs: 0.12 / Rpim(I) all: 0.028 / Rrim(I) all: 0.12 / Net I/σ(I): 15.9 |
Reflection shell | Resolution: 3.2→3.42 Å / Redundancy: 19.1 % / Rmerge(I) obs: 1.685 / Mean I/σ(I) obs: 2.1 / Num. unique obs: 2938 / CC1/2: 0.81 / Rpim(I) all: 0.394 / Rrim(I) all: 1.73 / % possible all: 100 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: 5DZQ, 4ZPL Resolution: 3.2→19.87 Å / SU ML: 0.5382 / Cross valid method: FREE R-VALUE / σ(F): 1.34 / Phase error: 32.55
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Solvent computation | Shrinkage radii: 0.8 Å / VDW probe radii: 1.1 Å | |||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 144.64 Å2 | |||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 3.2→19.87 Å
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Refine LS restraints |
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LS refinement shell |
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