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Yorodumi- PDB-2bfc: Reactivity modulation of human branched-chain alpha-ketoacid dehy... -
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-Basic information
Entry | Database: PDB / ID: 2bfc | ||||||
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Title | Reactivity modulation of human branched-chain alpha-ketoacid dehydrogenase by an internal molecular switch | ||||||
Components | (2-OXOISOVALERATE DEHYDROGENASE ...) x 2 | ||||||
Keywords | OXIDOREDUCTASE / OXIDATIVE DECARBOXYLATION / MAPLE SYRUP URINE DISEASE / THIAMINE DIPHOSPHATE / PHOSPHORYLATION / CONFORMATIONAL SWITCH | ||||||
Function / homology | Function and homology information 3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring) / 3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring) activity / branched-chain alpha-ketoacid dehydrogenase complex / BCKDH synthesizes BCAA-CoA from KIC, KMVA, KIV / oxoglutarate dehydrogenase complex / branched-chain amino acid catabolic process / Branched-chain amino acid catabolism / carboxy-lyase activity / response to glucocorticoid / response to cAMP ...3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring) / 3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring) activity / branched-chain alpha-ketoacid dehydrogenase complex / BCKDH synthesizes BCAA-CoA from KIC, KMVA, KIV / oxoglutarate dehydrogenase complex / branched-chain amino acid catabolic process / Branched-chain amino acid catabolism / carboxy-lyase activity / response to glucocorticoid / response to cAMP / response to nutrient / lipid metabolic process / mitochondrial matrix / protein-containing complex binding / nucleolus / mitochondrion / nucleoplasm / metal ion binding Similarity search - Function | ||||||
Biological species | HOMO SAPIENS (human) | ||||||
Method | X-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.64 Å | ||||||
Authors | Machius, M. / Wynn, R.M. / Chuang, J.L. / Tomchick, D.R. / Brautigam, C.A. / Chuang, D.T. | ||||||
Citation | Journal: Structure / Year: 2006 Title: A Versatile Conformational Switch Regulates Reactivity in Human Branched-Chain Alpha-Ketoacid Dehydrogenase. Authors: Machius, M. / Wynn, R.M. / Chuang, J.L. / Li, J. / Kluger, R. / Yu, D. / Tomchick, D.R. / Brautigam, C.A. / Chuang, D.T. #1: Journal: J.Biol.Chem. / Year: 2004 Title: Crosstalk between Cofactor Binding and the Phosphorylation Loop Conformation in the Bckd Machine Authors: Li, J. / Wynn, R.M. / Machius, M. / Chuang, J.L. / Karthikeyan, S. / Tomchick, D.R. / Chuang, D.T. #2: Journal: J.Biol.Chem. / Year: 2003 Title: Roles of His291-Alpha and His146-Beta in the Reductive Acylation Reaction Catalyzed by Human Branched-Chain Alpha-Ketoacid Dehydrogenase: Refined Phosphorylation Loop Structure in the Active Site Authors: Wynn, R. / Machius, M. / Chuang, J. / Li, J. / Tomchick, D. / Chuang, D. #3: Journal: J.Biol.Chem. / Year: 2001 Title: Roles of Active Site and Novel K+ Ion-Binding Site Residues in Human Mitochondrial Branched-Chain Alpha-Ketoacid Decarboxylase/Dehydrogenase Authors: Wynn, R.M. / Ho, R. / Chuang, J.L. / Chuang, D.T. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 2bfc.cif.gz | 177.8 KB | Display | PDBx/mmCIF format |
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PDB format | pdb2bfc.ent.gz | 138.7 KB | Display | PDB format |
PDBx/mmJSON format | 2bfc.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 2bfc_validation.pdf.gz | 789.6 KB | Display | wwPDB validaton report |
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Full document | 2bfc_full_validation.pdf.gz | 799.6 KB | Display | |
Data in XML | 2bfc_validation.xml.gz | 33.9 KB | Display | |
Data in CIF | 2bfc_validation.cif.gz | 51.6 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/bf/2bfc ftp://data.pdbj.org/pub/pdb/validation_reports/bf/2bfc | HTTPS FTP |
-Related structure data
Related structure data | 1wciC 2beuC 2bevC 2bewC 2bfbC 2bfdC 2bfeC 2bffC 1olsS S: Starting model for refinement C: citing same article (ref.) |
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Similar structure data |
-Links
-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
-2-OXOISOVALERATE DEHYDROGENASE ... , 2 types, 2 molecules AB
#1: Protein | Mass: 45472.031 Da / Num. of mol.: 1 / Fragment: RESIDUES 46-445 / Mutation: YES Source method: isolated from a genetically manipulated source Source: (gene. exp.) HOMO SAPIENS (human) / Plasmid: PTRC-ALPHA-BETAHIS / Production host: ESCHERICHIA COLI (E. coli) Strain (production host): BL-21 CELLS WITH OVEREXPRESSING GROEL AND GROES References: UniProt: P12694, 3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring) |
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#2: Protein | Mass: 37902.270 Da / Num. of mol.: 1 / Fragment: RESIDUES 51-392 Source method: isolated from a genetically manipulated source Source: (gene. exp.) HOMO SAPIENS (human) / Plasmid: PTRC-ALPHA-BETAHIS / Production host: ESCHERICHIA COLI (E. coli) Strain (production host): BL-21 CELLS WITH OVEREXPRESSING GROEL AND GROES References: UniProt: P21953, 3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring) |
-Non-polymers , 5 types, 619 molecules
#3: Chemical | #4: Chemical | ChemComp-MN / | #5: Chemical | ChemComp-TZD / | #6: Chemical | ChemComp-GOL / | #7: Water | ChemComp-HOH / | |
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-Details
Compound details | ENGINEERED RESIDUE IN CHAIN A, PHE 113 FROM TYR 3-METHYL-2-OXOBUTANOATE + [DIHYDROLIPOYLLYSINE- ...ENGINEERED |
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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: 2.5 Å3/Da / Density % sol: 53.4 % |
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Crystal grow | Temperature: 295 K / Method: vapor diffusion / pH: 5.5 Details: CRYSTALS WERE GROWN AT 22C VIA THE VAPOR DIFFUSION METHOD IN COMPLEX WITH A 40 AMINO ACID PEPTIDE DERIVED FROM THE SUBUNIT BINDING DOMAIN (SBD) OF THE E2 COMPONENT OF BRANCHED CHAIN ALPHA- ...Details: CRYSTALS WERE GROWN AT 22C VIA THE VAPOR DIFFUSION METHOD IN COMPLEX WITH A 40 AMINO ACID PEPTIDE DERIVED FROM THE SUBUNIT BINDING DOMAIN (SBD) OF THE E2 COMPONENT OF BRANCHED CHAIN ALPHA-KETOACID DEHDROGENASE. THIS COMPLEX WAS FORMED BY MIXING N-TERMINALLY HIS6-TAGGED PROTEIN WITH C-TERMINALLY HIS6-TAGGED SBD IN 50 MM NA-HEPES, PH 7.5, 150 MM KCL, 20 MM DTT AND 5% (V/V) GLYCEROL AT A MOLAR RATIO OF 1:4. CRYSTALS OF THE COMPLEX (20 MG/ML) WERE OBTAINED BY MIXING 3 MICROLITERS OF PROTEIN WITH 3 MICROLITERS OF CRYSTALLIZATION SOLUTION (10% (V/V) POLYETHYLENE GLYCOL 4000, 10% (V/V) MPD AND 0.1M SODIUM CITRATE, PH 5.8) WITH 1 ML OF CRYSTALLIZATION SOLUTION IN THE RESERVOIR. MANGANESE IONS WERE USED INSTEAD OF MAGNESIUM REQUIRED FOR THE BINDING OF THIAMIN DIPHOSPHATE TO THE ENZYME. THE PRESENCE OF MANGANESE IONS IN THE CRYSTALS RESULTED IN IMPROVED X-RAY DIFFRACTION QUALITIES WITHOUT AFFECTING THE CATALYTIC PROPERTIES. CRYSTALS WERE CRYO-PROTECTED BY STEP-WISE TRANSFER INTO CRYO-BUFFER (CRYSTALLIZATION SOLUTION CONTAINING 5-10%(V/V) GLYCEROL). |
-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: SYNCHROTRON / Site: APS / Beamline: 19-ID / Wavelength: 1.00691 |
Detector | Type: CUSTOM / Detector: CCD / Date: Aug 15, 2004 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1.00691 Å / Relative weight: 1 |
Reflection | Resolution: 1.64→35.88 Å / Num. obs: 100584 / % possible obs: 97.8 % / Observed criterion σ(I): -3 / Redundancy: 5.4 % / Biso Wilson estimate: 16.08 Å2 / Rmerge(I) obs: 0.05 / Net I/σ(I): 30.9 |
Reflection shell | Resolution: 1.64→1.67 Å / Redundancy: 4.1 % / Rmerge(I) obs: 0.48 / Mean I/σ(I) obs: 2.4 / % possible all: 79.4 |
-Processing
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Refinement | Method to determine structure: MOLECULAR REPLACEMENT Starting model: PDB ENTRY 1OLS Resolution: 1.64→30 Å / Cor.coef. Fo:Fc: 0.973 / Cor.coef. Fo:Fc free: 0.969 / SU B: 2.411 / SU ML: 0.044 / TLS residual ADP flag: LIKELY RESIDUAL / Cross valid method: THROUGHOUT / ESU R: 0.071 / ESU R Free: 0.068 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS.
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Solvent computation | Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 15.47 Å2
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Refinement step | Cycle: LAST / Resolution: 1.64→30 Å
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Refine LS restraints |
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