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Open data
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Basic information
Entry | Database: PDB / ID: 1dct | ||||||
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Title | DNA (CYTOSINE-5) METHYLASE FROM HAEIII COVALENTLY BOUND TO DNA | ||||||
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![]() | TRANSFERASE/DNA / ENZYME / CYTOSINE METHYLASE / TRANSFERASE-DNA COMPLEX | ||||||
Function / homology | ![]() DNA (cytosine-5-)-methyltransferase / DNA (cytosine-5-)-methyltransferase activity / DNA restriction-modification system / methylation / DNA binding / ATP binding Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ![]() | ||||||
![]() | Reinisch, K.M. / Chen, L. / Verdine, G.L. / Lipscomb, W.N. | ||||||
![]() | ![]() Title: The crystal structure of HaeIII methyltransferase convalently complexed to DNA: an extrahelical cytosine and rearranged base pairing. Authors: Reinisch, K.M. / Chen, L. / Verdine, G.L. / Lipscomb, W.N. #1: ![]() Title: Crystallization and Prelimanary Crystallographic Analysis of a DNA (Cytosine-5) -Methyltransferase from Haemophilus Aegyptius Bound Covalently to DNA Authors: Reinisch, K.M. / Chen, L. / Verdine, G.L. / Lipscomb, W.N. | ||||||
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 178.7 KB | Display | ![]() |
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PDB format | ![]() | 145.8 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 406.2 KB | Display | ![]() |
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Full document | ![]() | 460.5 KB | Display | |
Data in XML | ![]() | 22 KB | Display | |
Data in CIF | ![]() | 32.2 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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1 | ![]()
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2 | ![]()
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Unit cell |
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Details | THIS FILE CONTAINS 2 PROTEIN-DNA COMPLEXES IN THE ASYMMETRIC UNIT. PROTEIN MONOMER A IS COVALENTLY BOUND TO A DNA DUPLEX CONSISTING OF CHAINS F AND M, AND PROTEIN MONOMER B IS COVALENTLY LINKED TO A DUPLEX CONSISTING OF CHAINS G AND N. THERE ARE TWO SPECIAL NUCLEOTIDE BASES INCORPORATED INTO EACH DNA DUPLEX - ONE IRREGULAR BASE IN EACH CHAIN. ONE OF THESE BASES IS A CYTOSINE METHYLATED AT THE 5-POSITION, AND THE OTHER (DESCRIBED IN MORE DETAIL BELOW) IS USED TO COVALENTLY LINK THE DNA TO THE PROTEIN. THE DNA AT THE RECOGNITION SITE IS VERY DISTORTED: THERE IS AN EXTRAHELICAL CYTOSINE (THE MODIFIED ONE COVALENTLY LINKED TO THE PROTEIN VIA CYS 71: +C F 10 AND +C G 10) AND BASE PAIRING IN THE DNA RECOGNITION SEQUENCE IS REORGANIZED. THERE ARE ALSO TWO CA+2 IONS IN THE ASYMMETRIC UNIT. |
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Components
#1: DNA chain | Mass: 5559.653 Da / Num. of mol.: 2 / Source method: obtained synthetically #2: DNA chain | Mass: 5553.590 Da / Num. of mol.: 2 / Source method: obtained synthetically #3: Protein | Mass: 37093.559 Da / Num. of mol.: 2 / Source method: isolated from a natural source Source: (natural) ![]() Species: Haemophilus influenzae / Strain: biotype aegyptius / References: UniProt: P20589, EC: 2.1.1.73 #4: Chemical | |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.48 Å3/Da / Density % sol: 45 % | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Crystal grow | Temperature: 277 K / Method: vapor diffusion, hanging drop / pH: 6.5 Details: pH 6.50, VAPOR DIFFUSION, HANGING DROP, temperature 277.00K | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Components of the solutions |
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Crystal | *PLUS | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Crystal grow | *PLUS pH: 6.5 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Components of the solutions | *PLUS
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-Data collection
Diffraction | Mean temperature: 113 K |
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Diffraction source | Source: ![]() |
Detector | Type: RIGAKU RAXIS II / Detector: IMAGE PLATE |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1.5418 Å / Relative weight: 1 |
Reflection | Highest resolution: 2.7 Å / Num. all: 129524 / Num. obs: 26866 / % possible obs: 95 % / Rmerge(I) obs: 0.076 |
Reflection | *PLUS Highest resolution: 2.7 Å / % possible obs: 95 % / Observed criterion σ(I): 1 / Num. measured all: 129524 |
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Processing
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Refinement | Resolution: 2.8→10 Å / Cross valid method: THROUGHOUT / σ(F): 2
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Refine analyze | Luzzati sigma a obs: 0.3 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 2.8→10 Å
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Refine LS restraints |
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Software | *PLUS Name: ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement | *PLUS Highest resolution: 2.8 Å / Lowest resolution: 10 Å / σ(F): 2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Solvent computation | *PLUS | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | *PLUS |