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Yorodumi- PDB-1qlc: Solution structure of the second PDZ domain of Postsynaptic Density-95 -
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Basic information
| Entry | Database: PDB / ID: 1qlc | ||||||
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| Title | Solution structure of the second PDZ domain of Postsynaptic Density-95 | ||||||
Components | POSTSYNAPTIC DENSITY PROTEIN 95 | ||||||
Keywords | PEPTIDE RECOGNITION / PDZ DOMAIN / NEURONAL NITRIC OXIDE SYNTHASE / NMDA RECEPTOR BINDING | ||||||
| Function / homology | Function and homology informationRHO GTPases activate CIT / positive regulation of AMPA glutamate receptor clustering / neuronal ion channel clustering / P2Y1 nucleotide receptor binding / beta-1 adrenergic receptor binding / Neurexins and neuroligins / neuroligin family protein binding / regulation of grooming behavior / structural constituent of postsynaptic density / synaptic vesicle maturation ...RHO GTPases activate CIT / positive regulation of AMPA glutamate receptor clustering / neuronal ion channel clustering / P2Y1 nucleotide receptor binding / beta-1 adrenergic receptor binding / Neurexins and neuroligins / neuroligin family protein binding / regulation of grooming behavior / structural constituent of postsynaptic density / synaptic vesicle maturation / positive regulation of neuron projection arborization / receptor localization to synapse / vocalization behavior / neuron spine / cerebellar mossy fiber / AMPA glutamate receptor clustering / protein localization to synapse / positive regulation of dendrite morphogenesis / proximal dendrite / Trafficking of AMPA receptors / dendritic branch / LGI-ADAM interactions / Activation of Ca-permeable Kainate Receptor / dendritic spine morphogenesis / negative regulation of receptor internalization / frizzled binding / neuron projection terminus / acetylcholine receptor binding / juxtaparanode region of axon / regulation of NMDA receptor activity / dendritic spine organization / cellular response to potassium ion / RAF/MAP kinase cascade / positive regulation of synapse assembly / beta-2 adrenergic receptor binding / NMDA selective glutamate receptor signaling pathway / Synaptic adhesion-like molecules / neuromuscular process controlling balance / neurotransmitter receptor localization to postsynaptic specialization membrane / cortical cytoskeleton / locomotory exploration behavior / AMPA glutamate receptor complex / excitatory synapse / social behavior / regulation of neuronal synaptic plasticity / kinesin binding / glutamate receptor binding / Unblocking of NMDA receptors, glutamate binding and activation / positive regulation of excitatory postsynaptic potential / D1 dopamine receptor binding / positive regulation of synaptic transmission / regulation of postsynaptic membrane neurotransmitter receptor levels / ionotropic glutamate receptor binding / dendrite cytoplasm / synaptic membrane / cell periphery / PDZ domain binding / neuromuscular junction / establishment of protein localization / cell-cell adhesion / regulation of long-term neuronal synaptic plasticity / postsynaptic density membrane / cerebral cortex development / kinase binding / synaptic vesicle / cell-cell junction / cell junction / nervous system development / positive regulation of cytosolic calcium ion concentration / protein-containing complex assembly / scaffold protein binding / protein phosphatase binding / chemical synaptic transmission / dendritic spine / postsynaptic membrane / postsynapse / neuron projection / postsynaptic density / signaling receptor binding / synapse / dendrite / protein kinase binding / protein-containing complex binding / glutamatergic synapse / endoplasmic reticulum / membrane / plasma membrane / cytoplasm / cytosol Similarity search - Function | ||||||
| Biological species | ![]() | ||||||
| Method | SOLUTION NMR | ||||||
Authors | Tochio, H. / Hung, F. / Li, M. / Zhang, M. | ||||||
Citation | Journal: J Mol Biol / Year: 2000Title: Solution structure and backbone dynamics of the second PDZ domain of postsynaptic density-95. Authors: H Tochio / F Hung / M Li / D S Bredt / M Zhang / ![]() Abstract: The second PDZ domain of postsynaptic density-95 (PSD-95 PDZ2) plays a critical role in coupling N-methyl-D-aspartate receptors to neuronal nitric oxide synthase (nNOS). In this work, the solution ...The second PDZ domain of postsynaptic density-95 (PSD-95 PDZ2) plays a critical role in coupling N-methyl-D-aspartate receptors to neuronal nitric oxide synthase (nNOS). In this work, the solution structure of PSD-95 PDZ2 was determined to high resolution by NMR spectroscopy. The structure of PSD-95 PDZ2 was compared in detail with that of alpha1-syntrophin PDZ domain, as the PDZ domains share similar target interaction properties. The interaction of the PSD-95 PDZ2 with a carboxyl-terminal peptide derived from a cytoplasmic protein CAPON was studied by NMR titration experiments. Complex formation between PSD-95 PDZ2 and the nNOS PDZ was modelled on the basis of the crystal structure of the alpha1-syntrophin PDZ/nNOS PDZ dimer. We found that the prolonged loop connecting the betaB and betaC strands of PSD-95 PDZ2 is likely to play a role in both the binding of the carboxyl-terminal peptide and the nNOS beta-finger. Finally, the backbone dynamics of the PSD-95 PDZ2 in the absence of bound peptide were studied using a model-free approach. The "GLGF"-loop and the loop connecting alphaB and betaF of the protein display some degree of flexibility in solution. The rest of the protein is rigid and lacks detectable slow time-scale (microseconds to milliseconds) motions. In particular, the loop connecting betaB and betaC loop adopts a well-defined, rigid structure in solution. It appears that the loop adopts a pre-aligned conformation for the PDZ domain to interact with its targets. | ||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 1qlc.cif.gz | 552.7 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb1qlc.ent.gz | 462.1 KB | Display | PDB format |
| PDBx/mmJSON format | 1qlc.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 1qlc_validation.pdf.gz | 339.3 KB | Display | wwPDB validaton report |
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| Full document | 1qlc_full_validation.pdf.gz | 488.5 KB | Display | |
| Data in XML | 1qlc_validation.xml.gz | 36.6 KB | Display | |
| Data in CIF | 1qlc_validation.cif.gz | 58.8 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/ql/1qlc ftp://data.pdbj.org/pub/pdb/validation_reports/ql/1qlc | HTTPS FTP |
-Related structure data
| Related structure data | |
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| Similar structure data |
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Assembly
| Deposited unit | ![]()
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| NMR ensembles |
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Components
| #1: Protein | Mass: 9982.496 Da / Num. of mol.: 1 / Fragment: THE SECOND PDZ DOMAIN Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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-Experimental details
-Experiment
| Experiment | Method: SOLUTION NMR |
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Sample preparation
| Sample conditions | Ionic strength: 100 mM / pH: 6 / Pressure: 1 atm / Temperature: 303 K |
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| Crystal grow | *PLUS Method: other / Details: NMR |
-NMR measurement
| NMR spectrometer | Type: Varian UNITY / Manufacturer: Varian / Model: UNITY / Field strength: 500 MHz |
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Processing
| NMR software | Name: X-PLOR / Version: 3.8 / Developer: BRUNGER / Classification: refinement |
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| Refinement | Software ordinal: 1 Details: TORSION ANGLE DYNAMICS SIMULATED ANNEALING REFINEMENT |
| NMR ensemble | Conformers submitted total number: 20 |
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