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- PDB-4rdh: Crystal structure of E. coli tRNA N6-threonylcarbamoyladenosine d... -

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Basic information

Entry
Database: PDB / ID: 4rdh
TitleCrystal structure of E. coli tRNA N6-threonylcarbamoyladenosine dehydratase, TcdA
ComponentstRNA threonylcarbamoyladenosine dehydratase
KeywordsLIGASE / Rossman fold / dehydratase
Function / homology
Function and homology information


Ligases; Forming carbon-oxygen bonds / tRNA threonylcarbamoyladenosine dehydratase / cyclic threonylcarbamoyladenosine biosynthetic process / ubiquitin-like modifier activating enzyme activity / sodium ion binding / potassium ion binding / protein homodimerization activity / ATP binding / membrane
Similarity search - Function
ThiF/MoeB/HesA family / Ubiquitin-activating enzyme / THIF-type NAD/FAD binding fold / ThiF family / NAD(P)-binding Rossmann-like Domain / Rossmann fold / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
ADENOSINE MONOPHOSPHATE / tRNA threonylcarbamoyladenosine dehydratase
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / SYNCHROTRON / SAD / Resolution: 2.1 Å
AuthorsPark, S.Y. / Kim, S. / Lee, H.
CitationJournal: J.Mol.Biol. / Year: 2015
Title: The Structure of Escherichia coli TcdA (Also Known As CsdL) Reveals a Novel Topology and Provides Insight into the tRNA Binding Surface Required for N(6)-Threonylcarbamoyladenosine Dehydratase Activity.
Authors: Kim, S. / Lee, H. / Park, S.
History
DepositionSep 19, 2014Deposition site: RCSB / Processing site: RCSB
Revision 1.0Aug 5, 2015Provider: repository / Type: Initial release
Revision 1.1Oct 7, 2015Group: Database references

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: tRNA threonylcarbamoyladenosine dehydratase
B: tRNA threonylcarbamoyladenosine dehydratase
C: tRNA threonylcarbamoyladenosine dehydratase
D: tRNA threonylcarbamoyladenosine dehydratase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)126,79913
Polymers124,9454
Non-polymers1,8539
Water7,674426
1
A: tRNA threonylcarbamoyladenosine dehydratase
B: tRNA threonylcarbamoyladenosine dehydratase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)63,3516
Polymers62,4732
Non-polymers8794
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area6410 Å2
ΔGint-25 kcal/mol
Surface area18390 Å2
MethodPISA
2
C: tRNA threonylcarbamoyladenosine dehydratase
D: tRNA threonylcarbamoyladenosine dehydratase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)63,4477
Polymers62,4732
Non-polymers9755
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area6300 Å2
ΔGint-37 kcal/mol
Surface area18410 Å2
MethodPISA
Unit cell
Length a, b, c (Å)65.686, 97.190, 84.478
Angle α, β, γ (deg.)90.00, 112.04, 90.00
Int Tables number4
Space group name H-MP1211

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Components

#1: Protein
tRNA threonylcarbamoyladenosine dehydratase / t(6)A37 dehydratase


Mass: 31236.322 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Gene: tcdA, ygdL, csdL / Plasmid: pET28 / Production host: Escherichia coli (E. coli) / Strain (production host): BL21(DE3)
References: UniProt: Q46927, Ligases; Forming carbon-oxygen bonds
#2: Chemical
ChemComp-AMP / ADENOSINE MONOPHOSPHATE / Adenosine monophosphate


Mass: 347.221 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C10H14N5O7P / Comment: AMP*YM
#3: Chemical
ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL / Glycerol


Mass: 92.094 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C3H8O3
#4: Chemical ChemComp-SO4 / SULFATE ION / Sulfate


Mass: 96.063 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: SO4
#5: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 426 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2 Å3/Da / Density % sol: 38.51 %
Crystal growTemperature: 295 K / Method: vapor diffusion, hanging drop / pH: 7.5
Details: 25% (w/v) PEG 3350, 0.1 M Hepes, pH 7.5 and 0.2 M ammonium sulfate, VAPOR DIFFUSION, HANGING DROP, temperature 295K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: PAL/PLS / Beamline: 7A (6B, 6C1) / Wavelength: 0.97902 Å
DetectorType: ADSC QUANTUM 270r / Detector: CCD
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97902 Å / Relative weight: 1
ReflectionResolution: 2.1→50 Å / Num. obs: 57374 / % possible obs: 100 % / Redundancy: 3.7 % / Rmerge(I) obs: 0.092 / Rsym value: 0.092 / Net I/σ(I): 24
Reflection shellResolution: 2.1→2.14 Å / Redundancy: 3.7 % / Rmerge(I) obs: 0.375 / Mean I/σ(I) obs: 5.38 / Rsym value: 0.375 / % possible all: 100

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Processing

Software
NameVersionClassification
ADSCQuantumdata collection
PHENIXmodel building
REFMAC5.8.0049refinement
HKL-2000data reduction
HKL-2000data scaling
RefinementMethod to determine structure: SAD / Resolution: 2.1→50 Å / Cor.coef. Fo:Fc: 0.966 / Cor.coef. Fo:Fc free: 0.935 / SU B: 4.327 / SU ML: 0.114 / Cross valid method: THROUGHOUT / ESU R: 0.186 / ESU R Free: 0.166 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.20396 2896 5.1 %RANDOM
Rwork0.14803 ---
obs0.15088 54282 99.59 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 27.88 Å2
Baniso -1Baniso -2Baniso -3
1--1.33 Å20 Å20.05 Å2
2---1.14 Å20 Å2
3---1.83 Å2
Refinement stepCycle: LAST / Resolution: 2.1→50 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms7290 0 121 426 7837
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0170.0197492
X-RAY DIFFRACTIONr_bond_other_d0.0020.027374
X-RAY DIFFRACTIONr_angle_refined_deg1.8711.98210157
X-RAY DIFFRACTIONr_angle_other_deg0.869316861
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.8965965
X-RAY DIFFRACTIONr_dihedral_angle_2_deg37.44623.322292
X-RAY DIFFRACTIONr_dihedral_angle_3_deg16.016151176
X-RAY DIFFRACTIONr_dihedral_angle_4_deg15.3721560
X-RAY DIFFRACTIONr_chiral_restr0.1060.21207
X-RAY DIFFRACTIONr_gen_planes_refined0.0090.028431
X-RAY DIFFRACTIONr_gen_planes_other0.0010.021677
X-RAY DIFFRACTIONr_mcbond_it2.2162.4773866
X-RAY DIFFRACTIONr_mcbond_other2.2162.4763865
X-RAY DIFFRACTIONr_mcangle_it3.2393.6954820
X-RAY DIFFRACTIONr_mcangle_other3.2393.6964821
X-RAY DIFFRACTIONr_scbond_it3.3992.9263626
X-RAY DIFFRACTIONr_scbond_other3.3992.9263626
X-RAY DIFFRACTIONr_scangle_other5.1684.1935335
X-RAY DIFFRACTIONr_long_range_B_refined6.80120.9238774
X-RAY DIFFRACTIONr_long_range_B_other6.6920.6518608
LS refinement shellResolution: 2.101→2.155 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.24 203 -
Rwork0.195 3972 -
obs--98.35 %

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