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- PDB-1pjq: Structure and function of CysG, the multifunctional methyltransfe... -
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Open data
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Basic information
Entry | Database: PDB / ID: 1pjq | ||||||
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Title | Structure and function of CysG, the multifunctional methyltransferase/dehydrogenase/ferrochelatase for siroheme synthesis | ||||||
![]() | Siroheme synthase | ||||||
![]() | TRANSFERASE/OXIDOREDUCTASE/LYASE / Rossmann fold / nucleotide binding motif / SAM / NAD / phosphoserine / TRANSFERASE-OXIDOREDUCTASE-LYASE COMPLEX | ||||||
Function / homology | ![]() precorrin-2 dehydrogenase / precorrin-2 dehydrogenase activity / uroporphyrinogen-III C-methyltransferase / uroporphyrin-III C-methyltransferase activity / sirohydrochlorin ferrochelatase / sirohydrochlorin ferrochelatase activity / siroheme biosynthetic process / cobalamin biosynthetic process / NAD binding / methylation Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ![]() ![]() ![]() | ||||||
![]() | Stroupe, M.E. / Leech, H.K. / Daniels, D.S. / Warren, M.J. / Getzoff, E.D. | ||||||
![]() | ![]() Title: CysG structure reveals tetrapyrrole-binding features and novel regulation of siroheme biosynthesis. Authors: Stroupe, M.E. / Leech, H.K. / Daniels, D.S. / Warren, M.J. / Getzoff, E.D. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 190.7 KB | Display | ![]() |
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PDB format | ![]() | 159.2 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 844.2 KB | Display | ![]() |
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Full document | ![]() | 887.3 KB | Display | |
Data in XML | ![]() | 43 KB | Display | |
Data in CIF | ![]() | 59.1 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
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Links
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Assembly
Deposited unit | ![]()
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Unit cell |
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Details | The asymmetric unit contains a single homodimer. Each of CysG's modules (CysGB, residues 1-212, and CysGA, residues 213-457) are homodimers. Each subunit contains half of CysGB and half of CysGA, each of which is related to its dimer partner by a unique non-crystallographic two-fold symmetry axis. CysG has two distinct non-crystallographic two-fold symmetry axes, one for each homodimeric module. |
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Components
#1: Protein | Mass: 50286.477 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Details: Residues 1-212 (CysGB) are a dehydrogenase/ferrochelatase, Residues 213-457 (CysGA) are a bismethyltransferase Source: (gene. exp.) ![]() ![]() References: UniProt: P25924, uroporphyrinogen-III C-methyltransferase, Oxidoreductases, EC: 4.99.1.- #2: Chemical | #3: Chemical | ChemComp-PGE / | #4: Chemical | ChemComp-SAH / | #5: Water | ChemComp-HOH / | |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.4 Å3/Da / Density % sol: 48.71 % | ||||||||||||||||||||||||||||||||||||||||||
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Crystal grow | Temperature: 293 K / Method: vapor diffusion, hanging drop / pH: 4.8 Details: PEG200, acetate, sodium chloride, 2-mercaptoethanol, pH 4.8, VAPOR DIFFUSION, HANGING DROP, temperature 293K | ||||||||||||||||||||||||||||||||||||||||||
Crystal grow | *PLUS pH: 4.5 / Method: vapor diffusion | ||||||||||||||||||||||||||||||||||||||||||
Components of the solutions | *PLUS
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-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: MARRESEARCH / Detector: IMAGE PLATE / Date: Mar 10, 2000 Details: flat mirror (vertical focusing) single crystal (Si311) bent monochromator (horizontal focusing) |
Radiation | Monochromator: Si(311) bent / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.98 Å / Relative weight: 1 |
Reflection | Resolution: 2.21→19.97 Å / Num. obs: 48911 / % possible obs: 99.5 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 3.5 % / Biso Wilson estimate: 24.3 Å2 / Rsym value: 0.057 / Net I/σ(I): 23 |
Reflection shell | Resolution: 2.21→2.26 Å / Mean I/σ(I) obs: 3 / Num. unique all: 2348 / Rsym value: 0.453 / % possible all: 97.5 |
Reflection | *PLUS Lowest resolution: 20 Å / Num. obs: 48472 / Rmerge(I) obs: 0.057 |
Reflection shell | *PLUS % possible obs: 97.5 % / Rmerge(I) obs: 0.453 |
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Processing
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Refinement | Method to determine structure: ![]()
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Solvent computation | Solvent model: FLAT MODEL / Bsol: 55.0306 Å2 / ksol: 0.332865 e/Å3 | ||||||||||||||||||||||||
Displacement parameters | Biso mean: 40.2 Å2
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Refine analyze |
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Refinement step | Cycle: LAST / Resolution: 2.21→19.97 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 2.21→2.34 Å / Rfactor Rfree error: 0.012 / Total num. of bins used: 6
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Xplor file |
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Refinement | *PLUS Lowest resolution: 20 Å / % reflection Rfree: 10 % / Rfactor Rfree: 0.275 / Rfactor Rwork: 0.236 | ||||||||||||||||||||||||
Solvent computation | *PLUS | ||||||||||||||||||||||||
Displacement parameters | *PLUS | ||||||||||||||||||||||||
Refine LS restraints | *PLUS
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