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Yorodumi- PDB-4ly6: Nucleotide-induced asymmetry within ATPase activator ring drives ... -
+Open data
-Basic information
Entry | Database: PDB / ID: 4ly6 | ||||||
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Title | Nucleotide-induced asymmetry within ATPase activator ring drives s54-RNAP interaction and ATP hydrolysis | ||||||
Components | Transcriptional regulator (NtrC family) | ||||||
Keywords | TRANSCRIPTION REGULATOR / AAA+ ATPase / bacterial enhancer binding protein / s54-dependent transcription activator / molecular machine / sigma54 / s54-RNAP | ||||||
Function / homology | Function and homology information phosphorelay signal transduction system / sequence-specific DNA binding / regulation of DNA-templated transcription / ATP hydrolysis activity / ATP binding / identical protein binding / metal ion binding Similarity search - Function | ||||||
Biological species | Aquifex aeolicus (bacteria) | ||||||
Method | X-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / molecular replacement / Resolution: 3.6 Å | ||||||
Authors | Sysoeva, T.A. / Chowdhury, S. / Guo, L. / Nixon, B.T. | ||||||
Citation | Journal: Genes Dev / Year: 2013 Title: Nucleotide-induced asymmetry within ATPase activator ring drives σ54-RNAP interaction and ATP hydrolysis. Authors: Tatyana A Sysoeva / Saikat Chowdhury / Liang Guo / B Tracy Nixon / Abstract: It is largely unknown how the typical homomeric ring geometry of ATPases associated with various cellular activities enables them to perform mechanical work. Small-angle solution X-ray scattering, ...It is largely unknown how the typical homomeric ring geometry of ATPases associated with various cellular activities enables them to perform mechanical work. Small-angle solution X-ray scattering, crystallography, and electron microscopy (EM) reconstructions revealed that partial ATP occupancy caused the heptameric closed ring of the bacterial enhancer-binding protein (bEBP) NtrC1 to rearrange into a hexameric split ring of striking asymmetry. The highly conserved and functionally crucial GAFTGA loops responsible for interacting with σ54-RNA polymerase formed a spiral staircase. We propose that splitting of the ensemble directs ATP hydrolysis within the oligomer, and the ring's asymmetry guides interaction between ATPase and the complex of σ54 and promoter DNA. Similarity between the structure of the transcriptional activator NtrC1 and those of distantly related helicases Rho and E1 reveals a general mechanism in homomeric ATPases whereby complex allostery within the ring geometry forms asymmetric functional states that allow these biological motors to exert directional forces on their target macromolecules. #1: Journal: To Be Published Title: Crystallization and preliminary X-ray analysis of a sigma54-dependent transcription activator NtrC1 from Aquifex aeolicus bound to ground state ATP analog Authors: Sysoeva, T.A. / Yennawar, N. / Allaire, M. / Nixon, B.T. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 4ly6.cif.gz | 2.2 MB | Display | PDBx/mmCIF format |
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PDB format | pdb4ly6.ent.gz | 1.9 MB | Display | PDB format |
PDBx/mmJSON format | 4ly6.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 4ly6_validation.pdf.gz | 5.6 MB | Display | wwPDB validaton report |
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Full document | 4ly6_full_validation.pdf.gz | 5.6 MB | Display | |
Data in XML | 4ly6_validation.xml.gz | 204 KB | Display | |
Data in CIF | 4ly6_validation.cif.gz | 257.6 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/ly/4ly6 ftp://data.pdbj.org/pub/pdb/validation_reports/ly/4ly6 | HTTPS FTP |
-Related structure data
-Links
-Assembly
Deposited unit |
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Unit cell |
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Noncrystallographic symmetry (NCS) | NCS domain segments: (Selection details: chain 'X') |
-Components
#1: Protein | Mass: 30731.598 Da / Num. of mol.: 24 / Fragment: UNP residues 121-387 Source method: isolated from a genetically manipulated source Details: Met plus residues 121-387 / Source: (gene. exp.) Aquifex aeolicus (bacteria) / Gene: aq_1117, ntrC1 / Plasmid: pET21a / Production host: Escherichia coli (E. coli) / Strain (production host): BL2 (DE3) Rosetta / References: UniProt: O67198 #2: Chemical | ChemComp-08T / [[[( #3: Chemical | ChemComp-MG / #4: Chemical | |
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-Experimental details
-Experiment
Experiment | Method: X-RAY DIFFRACTION / Number of used crystals: 1 |
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-Sample preparation
Crystal | Density Matthews: 4.34 Å3/Da / Density % sol: 71.67 % |
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Crystal grow | Temperature: 277 K / Method: vapor diffusion, hanging drop / pH: 7.9 Details: 20% ethylene glycol, pH 7.9, vapor diffusion, hanging drop, temperature 277K |
-Data collection
Diffraction | Mean temperature: 100 K | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Diffraction source | Source: SYNCHROTRON / Site: ALS / Beamline: 8.3.1 / Wavelength: 1 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Detector | Type: ADSC QUANTUM 315r / Detector: CCD / Date: Sep 24, 2010 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Radiation | Monochromator: Si(111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Radiation wavelength | Wavelength: 1 Å / Relative weight: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reflection | Resolution: 3.6→37.86 Å / Num. all: 143704 / Num. obs: 109790 / % possible obs: 76.4 % / Observed criterion σ(F): 1 / Observed criterion σ(I): 1 / Redundancy: 1.66 % / Biso Wilson estimate: 102.03 Å2 / Rmerge(I) obs: 0.084 / Net I/σ(I): 5 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reflection shell |
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-Phasing
Phasing | Method: molecular replacement |
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-Processing
Software |
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Refinement | Method to determine structure: MOLECULAR REPLACEMENT / Resolution: 3.6→37.855 Å / Occupancy max: 1 / Occupancy min: 0.36 / SU ML: 0.57 / σ(F): 1.96 / Phase error: 37.97 / Stereochemistry target values: ML
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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 mean: 161.7593 Å2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 3.6→37.855 Å
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Refine LS restraints |
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Refine LS restraints NCS | Number: 29753 / Type: POSITIONAL / Rms dev position: 12.501 Å | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
LS refinement shell |
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