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- PDB-1mpe: Ensemble of 20 structures of the tetrameric mutant of the B1 doma... -
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Open data
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Basic information
Entry | Database: PDB / ID: 1mpe | ||||||
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Title | Ensemble of 20 structures of the tetrameric mutant of the B1 domain of streptococcal protein G | ||||||
![]() | Immunoglobulin G binding protein G | ||||||
![]() | PROTEIN BINDING / strand-exchanged tetramer / channel | ||||||
Function / homology | ![]() | ||||||
Biological species | ![]() | ||||||
Method | SOLUTION NMR / simulated annealing | ||||||
Model type details | minimized average | ||||||
![]() | Frank, M.K. / Dyda, F. / Dobrodumov, A. / Gronenborn, A.M. | ||||||
![]() | ![]() Title: Core mutations switch monomeric protein GB1 into an intertwined tetramer. Authors: Kirsten Frank, M. / Dyda, F. / Dobrodumov, A. / Gronenborn, A.M. #1: ![]() Title: A Novel, Highly Stable Fold of the Immunoglobulin Binding Domain of Streptococcal Protein G. Authors: Gronenborn, A.M. / Filpula, D.R. / Essig, N.Z. / Achari, A. / Whitlow, M. / Wingfield, P.T. / Clore, G.M. #2: ![]() Title: Core Mutants of the Immunoglobulin Binding Domain of Streptococcal Protein G: Stability and Structural Integrity Authors: Gronenborn, A.M. / Frank, M.K. / Clore, G.M. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 1.4 MB | Display | ![]() |
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PDB format | ![]() | 1.2 MB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
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Links
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Assembly
Deposited unit | ![]()
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1 |
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NMR ensembles |
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Components
#1: Antibody | Mass: 6302.931 Da / Num. of mol.: 4 / Fragment: B1 domain, sequence database residues 228-282 / Mutation: T2Q, L5V, A26F, F30V, Y33F, A34F 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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NMR experiment |
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NMR details | Text: T1,T2, and heteronuclear NOEs collected. Dipolar couplings (N-H) were collected as well. Dipolar coupling and chemical shifts from residues with heteronuclear NOE below 0.6 were not used. |
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Sample preparation
Details |
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Sample conditions | Ionic strength: 50 mM sodium phosphate, 0.02% sodium azide / pH: 5.45 / Pressure: 1 atm / Temperature: 313 K | |||||||||||||||
Crystal grow | *PLUS Method: other / Details: NMR |
-NMR measurement
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M | |||||||||||||||||||||||||
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Radiation wavelength | Relative weight: 1 | |||||||||||||||||||||||||
NMR spectrometer |
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Processing
NMR software |
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Refinement | Method: simulated annealing / Software ordinal: 1 Details: NMR constraints (per monomer) 822 NOE-derived distance restraints (534 intramonomer, 288 intermonomer) 42 distance restraints from hydrogen bonds (20 intramonomer, 22 intermonomer) 30 J- ...Details: NMR constraints (per monomer) 822 NOE-derived distance restraints (534 intramonomer, 288 intermonomer) 42 distance restraints from hydrogen bonds (20 intramonomer, 22 intermonomer) 30 J-coupling restraints, 33 Residual dipolar couplings (HN) 66 backbone dihedral angle restraints 31 sidechain dihedral angle restraints | ||||||||||||||||||||||||
NMR representative | Selection criteria: minimized average structure | ||||||||||||||||||||||||
NMR ensemble | Conformer selection criteria: structures with least restraint violations and phi, psi angles of residue 46 in allowed region of Ramachrandran plot Conformers calculated total number: 100 / Conformers submitted total number: 21 |