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Yorodumi- PDB-3jbw: Cryo-electron microscopy structure of RAG Paired Complex (with NB... -
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Open data
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Basic information
| Entry | Database: PDB / ID: 3jbw | ||||||
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| Title | Cryo-electron microscopy structure of RAG Paired Complex (with NBD, no symmetry) | ||||||
Components |
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Keywords | RECOMBINATION/DNA / RAG1 / RAG2 / V(D)J recombination / Paired complex / Antigen receptor gene recombination / T and B cell development / RECOMBINATION-DNA complex | ||||||
| Function / homology | Function and homology informationsomatic diversification of immune receptors via germline recombination within a single locus / hematopoietic or lymphoid organ development / DNA recombinase complex / endodeoxyribonuclease complex / protein-DNA complex assembly / lymphocyte differentiation / immunoglobulin V(D)J recombination / V(D)J recombination / phosphatidylinositol-3,4-bisphosphate binding / histone H3K4me3 reader activity ...somatic diversification of immune receptors via germline recombination within a single locus / hematopoietic or lymphoid organ development / DNA recombinase complex / endodeoxyribonuclease complex / protein-DNA complex assembly / lymphocyte differentiation / immunoglobulin V(D)J recombination / V(D)J recombination / phosphatidylinositol-3,4-bisphosphate binding / histone H3K4me3 reader activity / phosphatidylinositol-3,5-bisphosphate binding / phosphatidylinositol-3,4,5-trisphosphate binding / T cell differentiation / phosphatidylinositol-4,5-bisphosphate binding / phosphatidylinositol binding / thymus development / B cell differentiation / RING-type E3 ubiquitin transferase / ubiquitin-protein transferase activity / ubiquitin protein ligase activity / T cell differentiation in thymus / chromatin organization / endonuclease activity / DNA recombination / histone binding / sequence-specific DNA binding / adaptive immune response / Hydrolases; Acting on ester bonds / chromatin binding / magnesium ion binding / protein homodimerization activity / DNA binding / zinc ion binding / metal ion binding / nucleus Similarity search - Function | ||||||
| Biological species | ![]() Homo sapiens (human) | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.6 Å | ||||||
Authors | Ru, H. / Chambers, M.G. / Fu, T.-M. / Tong, A.B. / Liao, M. / Wu, H. | ||||||
Citation | Journal: Cell / Year: 2015Title: Molecular Mechanism of V(D)J Recombination from Synaptic RAG1-RAG2 Complex Structures. Authors: Heng Ru / Melissa G Chambers / Tian-Min Fu / Alexander B Tong / Maofu Liao / Hao Wu / ![]() Abstract: Diverse repertoires of antigen-receptor genes that result from combinatorial splicing of coding segments by V(D)J recombination are hallmarks of vertebrate immunity. The (RAG1-RAG2)2 recombinase (RAG) ...Diverse repertoires of antigen-receptor genes that result from combinatorial splicing of coding segments by V(D)J recombination are hallmarks of vertebrate immunity. The (RAG1-RAG2)2 recombinase (RAG) recognizes recombination signal sequences (RSSs) containing a heptamer, a spacer of 12 or 23 base pairs, and a nonamer (12-RSS or 23-RSS) and introduces precise breaks at RSS-coding segment junctions. RAG forms synaptic complexes only with one 12-RSS and one 23-RSS, a dogma known as the 12/23 rule that governs the recombination fidelity. We report cryo-electron microscopy structures of synaptic RAG complexes at up to 3.4 Å resolution, which reveal a closed conformation with base flipping and base-specific recognition of RSSs. Distortion at RSS-coding segment junctions and base flipping in coding segments uncover the two-metal-ion catalytic mechanism. Induced asymmetry involving tilting of the nonamer-binding domain dimer of RAG1 upon binding of HMGB1-bent 12-RSS or 23-RSS underlies the molecular mechanism for the 12/23 rule. | ||||||
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Structure visualization
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| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 3jbw.cif.gz | 1 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb3jbw.ent.gz | 872.5 KB | Display | PDB format |
| PDBx/mmJSON format | 3jbw.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 3jbw_validation.pdf.gz | 1 MB | Display | wwPDB validaton report |
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| Full document | 3jbw_full_validation.pdf.gz | 1.1 MB | Display | |
| Data in XML | 3jbw_validation.xml.gz | 73.6 KB | Display | |
| Data in CIF | 3jbw_validation.cif.gz | 111 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/jb/3jbw ftp://data.pdbj.org/pub/pdb/validation_reports/jb/3jbw | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 6489MC ![]() 6487C ![]() 6488C ![]() 6490C ![]() 6491C ![]() 3jbxC ![]() 3jbyC M: map data used to model this data C: citing same article ( |
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| Similar structure data |
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Links
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Assembly
| Deposited unit | ![]()
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Components
-V(D)J recombination-activating protein ... , 2 types, 4 molecules ACBD
| #1: Protein | Mass: 87684.125 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() References: UniProt: O13033, Hydrolases; Acting on ester bonds, Ligases; Forming carbon-nitrogen bonds; Acid-amino-acid ligases (peptide synthases) #2: Protein | Mass: 59435.930 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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-DNA chain , 3 types, 4 molecules EFIJ
| #3: DNA chain | Mass: 10439.762 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human) |
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| #4: DNA chain | Mass: 15439.880 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human) |
| #7: DNA chain | Mass: 4880.164 Da / Num. of mol.: 2 / Source method: obtained synthetically / Details: Coding end DNA forward strand / Source: (synth.) Homo sapiens (human) |
-Nicked 23-RSS intermediate ... , 2 types, 2 molecules GH
| #5: DNA chain | Mass: 18870.094 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human) |
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| #6: DNA chain | Mass: 13806.871 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human) |
-Non-polymers , 1 types, 2 molecules 
| #8: Chemical |
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-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
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| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
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| Molecular weight | Value: 0.4 MDa / Experimental value: YES | ||||||||||||||||||||
| Buffer solution | Name: Polymix buffer / pH: 7.5 / Details: 150 mM NaCl, 20 mM HEPES, 10 mM CaCl2, 1 mM TCEP | ||||||||||||||||||||
| Specimen | Conc.: 0.4 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||
| Specimen support | Details: 400 mesh Quantifoil holey carbon grid, glow discharged | ||||||||||||||||||||
| Vitrification | Instrument: GATAN CRYOPLUNGE 3 / Cryogen name: ETHANE / Temp: 120 K / Humidity: 85 % Details: Blot for 2.5 seconds before plunging into liquid ethane (GATAN CRYOPLUNGE 3). Method: Blot for 2.5 seconds before plunging. |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Tecnai Polara / Image courtesy: FEI Company |
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| Microscopy | Model: FEI POLARA 300 / Date: Mar 10, 2015 |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 31000 X / Calibrated magnification: 40607 X / Nominal defocus max: 2500 nm / Nominal defocus min: 1500 nm / Cs: 2 mm Astigmatism: Objective lens astigmatism was corrected at 150,000 times magnification. |
| Specimen holder | Specimen holder model: GATAN LIQUID NITROGEN / Temperature: 100 K / Temperature (max): 105 K / Temperature (min): 80 K |
| Image recording | Electron dose: 41 e/Å2 / Film or detector model: GATAN K2 (4k x 4k) |
| Image scans | Num. digital images: 550 |
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Processing
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| CTF correction | Details: Each particle | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3D reconstruction | Method: Projection matching / Resolution: 4.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 14129 / Nominal pixel size: 1.23 Å / Actual pixel size: 1.23 Å Details: (Single particle details: Image processing was carried out using SAMUEL and Relion.) (Single particle--Applied symmetry: C1) Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Refinement | Resolution: 4.6→4.6 Å / SU ML: 1.64 / σ(F): 0 / Phase error: 62.82 / Stereochemistry target values: MLHL
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| Solvent computation | Shrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Displacement parameters | Biso max: 587.07 Å2 / Biso mean: 180.3618 Å2 / Biso min: 19.35 Å2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Refinement step | Cycle: LAST / Resolution: 4.631→236.16 Å
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| Refine LS restraints |
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| LS refinement shell | Refine-ID: ELECTRON MICROSCOPY / Total num. of bins used: 4 / % reflection obs: 100 %
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| Refinement TLS params. | Method: refined / Origin x: 113.7436 Å / Origin y: 115.0465 Å / Origin z: 119.5786 Å
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| Refinement TLS group |
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