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- PDB-8p37: Structure a catalytically inactive mutant of the IMP dehydrogenas... -

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Basic information

Entry
Database: PDB / ID: 8p37
TitleStructure a catalytically inactive mutant of the IMP dehydrogenase related protein GUAB3 from Synechocystis PCC 6803
ComponentsIMP dehydrogenase subunit
KeywordsBIOSYNTHETIC PROTEIN / Complex of the enzyme with cofactor and product
Function / homology
Function and homology information


IMP dehydrogenase activity / purine nucleotide biosynthetic process
Similarity search - Function
IMP dehydrogenase-related 2 / IMP dehydrogenase / GMP reductase domain / Inosine-5'-monophosphate dehydrogenase / IMP dehydrogenase/GMP reductase / IMP dehydrogenase / GMP reductase domain / Aldolase-type TIM barrel
Similarity search - Domain/homology
NICOTINAMIDE-ADENINE-DINUCLEOTIDE / XANTHOSINE-5'-MONOPHOSPHATE / IMP dehydrogenase subunit
Similarity search - Component
Biological speciesSynechocystis sp. PCC 6803 (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.219 Å
AuthorsHernandez-Gomez, A. / Fernandez-Justel, D. / Buey, R.M.
Funding support Spain, 1items
OrganizationGrant numberCountry
Ministerio de Ciencia e Innovacion (MCIN)PID2019-109671GB-I00 Spain
CitationJournal: Structure / Year: 2023
Title: GuaB3, an overlooked enzyme in cyanobacteria's toolbox that sheds light on IMP dehydrogenase evolution.
Authors: Hernandez-Gomez, A. / Irisarri, I. / Fernandez-Justel, D. / Pelaez, R. / Jimenez, A. / Revuelta, J.L. / Balsera, M. / Buey, R.M.
History
DepositionMay 17, 2023Deposition site: PDBE / Processing site: PDBE
Revision 1.0Mar 27, 2024Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: IMP dehydrogenase subunit
hetero molecules


Theoretical massNumber of molelcules
Total (without water)41,5663
Polymers40,5381
Non-polymers1,0292
Water5,963331
1
A: IMP dehydrogenase subunit
hetero molecules

A: IMP dehydrogenase subunit
hetero molecules

A: IMP dehydrogenase subunit
hetero molecules

A: IMP dehydrogenase subunit
hetero molecules


Theoretical massNumber of molelcules
Total (without water)166,26612
Polymers162,1514
Non-polymers4,1158
Water724
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_555-x,-y,z1
crystal symmetry operation3_555-y,x,z1
crystal symmetry operation4_555y,-x,z1
Buried area26740 Å2
ΔGint-152 kcal/mol
Surface area44420 Å2
Unit cell
Length a, b, c (Å)112.867, 112.867, 54.119
Angle α, β, γ (deg.)90, 90, 90
Int Tables number79
Space group name H-MI4

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Components

#1: Protein IMP dehydrogenase subunit


Mass: 40537.801 Da / Num. of mol.: 1 / Mutation: C222S
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Synechocystis sp. PCC 6803 (bacteria) / Gene: guaB / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P73853
#2: Chemical ChemComp-XMP / XANTHOSINE-5'-MONOPHOSPHATE / 5-MONOPHOSPHATE-9-BETA-D-RIBOFURANOSYL XANTHINE


Mass: 365.213 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H14N4O9P
#3: Chemical ChemComp-NAD / NICOTINAMIDE-ADENINE-DINUCLEOTIDE


Mass: 663.425 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C21H27N7O14P2 / Comment: NAD*YM
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 331 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestN

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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: 2.13 Å3/Da / Density % sol: 42.14 %
Crystal growTemperature: 295 K / Method: vapor diffusion, sitting drop
Details: SynGUAB3-C222S crystals were grown in the presence of IMP and NAD+ in mother liquor from the condition 2-48 of the commercial screen Morpheus (Molecular Dimensions), which consists of an ...Details: SynGUAB3-C222S crystals were grown in the presence of IMP and NAD+ in mother liquor from the condition 2-48 of the commercial screen Morpheus (Molecular Dimensions), which consists of an amino acid mixture (0.02M DL-Glutamic acid monohydrate, 0.02M DL-Alanine, 0.02M Glycine, 0.02M DL-Lysine monohydrochloride, and 0.02M DL-Serine, a precipitant mix (25% (v/v) PEG 500 MME and 12.5 % (w/v) PEG 20000), and 0.1M of a buffer system (Tris-base, Bicine) adjusted at pH 8.5. Initial conditions: Buffer: 10 mM TrisHCl, pH 8.0 Protein concentration = 15 mg/mL Substrate concentration: 3 mM NAD + 3 mM IMP

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: ALBA / Beamline: XALOC / Wavelength: 0.979181423454 Å
DetectorType: DECTRIS PILATUS 6M / Detector: PIXEL / Date: Oct 18, 2022
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.979181423454 Å / Relative weight: 1
ReflectionResolution: 1.219→39.905 Å / Num. obs: 77746 / % possible obs: 94 % / Redundancy: 12.82 %
Details: Some remarks regarding the mmCIF items written, the PDB Exchange Dictionary (PDBx/mmCIF) Version 5.0 supporting the data files in the current PDB archive (dictionary version 5.325, last ...Details: Some remarks regarding the mmCIF items written, the PDB Exchange Dictionary (PDBx/mmCIF) Version 5.0 supporting the data files in the current PDB archive (dictionary version 5.325, last updated 2020-04-13: http://mmcif.wwpdb.org/dictionaries/mmcif_pdbx_v50.dic/Index/) and the actual quantities provided by MRFANA (https://github.com/githubgphl/MRFANA) from the autoPROC package (https://www.globalphasing.com/autoproc/). In general, the mmCIF categories here should provide items that are currently used in the PDB archive. If there are alternatives, the one recommended by the PDB developers has been selected. The distinction between *_all and *_obs quantities is not always clear: often only one version is actively used within the PDB archive (or is the one recommended by PDB developers). The intention of distinguishing between classes of reflections before and after some kind of observation criterion was applied, can in principle be useful - but such criteria change in various ways throughout the data processing steps (rejection of overloaded or too partial reflections, outlier/misfit rejections during scaling etc) and there is no retrospect computation of data scaling/merging statistics for the reflections used in the final refinement (where another observation criterion might have been applied). Typical data processing will usually only provide one version of statistics at various stages and these are given in the recommended item here, irrespective of the "_all" and "_obs" connotation, see e.g. the use of _reflns.pdbx_Rmerge_I_obs, _reflns.pdbx_Rrim_I_all and _reflns.pdbx_Rpim_I_all. Please note that all statistics related to "merged intensities" (or "merging") are based on inverse-variance weighting of the individual measurements making up a symmetry-unique reflection. This is standard for several decades now, even if some of the dictionary definitions seem to suggest that a simple "mean" or "average" intensity is being used instead. R-values are always given for all symmetry-equivalent reflections following Friedel's law, i.e. Bijvoet pairs are not treated separately (since we want to describe the overall mean intensity and not the mean I(+) and I(-) here). The Rrim metric is identical to the Rmeas R-value and only differs in name. _reflns.pdbx_number_measured_all is the number of measured intensities just before the final merging step (at which point no additional rejection takes place). _reflns.number_obs is the number of symmetry-unique observations, i.e. the result of merging those measurements via inverse-variance weighting. _reflns.pdbx_netI_over_sigmaI is based on the merged intensities (_reflns.number_obs) as expected. _reflns.pdbx_redundancy is synonymous with "multiplicity". The per-shell item _reflns_shell.number_measured_all corresponds to the overall value _reflns.pdbx_number_measured_all. The per-shell item _reflns_shell.number_unique_all corresponds to the overall value _reflns.number_obs. The per-shell item _reflns_shell.percent_possible_all corresponds to the overall value _reflns.percent_possible_obs. The per-shell item _reflns_shell.meanI_over_sigI_obs corresponds to the overall value given as _reflns.pdbx_netI_over_sigmaI. But be aware of the incorrect definition of the former in the current dictionary!
CC1/2: 0.999 / CC1/2 anomalous: -0.339 / Rmerge(I) obs: 0.0877 / Rpim(I) all: 0.0254 / Rrim(I) all: 0.0914 / AbsDiff over sigma anomalous: 0.71 / Baniso tensor eigenvalue 1: 0 Å2 / Baniso tensor eigenvalue 2: 0 Å2 / Baniso tensor eigenvalue 3: 9.4753 Å2 / Baniso tensor eigenvector 1 ortho1: 1 / Baniso tensor eigenvector 1 ortho2: 0 / Baniso tensor eigenvector 1 ortho3: 0 / Baniso tensor eigenvector 2 ortho1: 0 / Baniso tensor eigenvector 2 ortho2: 1 / Baniso tensor eigenvector 2 ortho3: 0 / Baniso tensor eigenvector 3 ortho1: 0 / Baniso tensor eigenvector 3 ortho2: 0 / Baniso tensor eigenvector 3 ortho3: 1 / Aniso diffraction limit 1: 1.219 Å / Aniso diffraction limit 2: 1.219 Å / Aniso diffraction limit 3: 1.506 Å / Aniso diffraction limit axis 1 ortho1: 1 / Aniso diffraction limit axis 1 ortho2: 0 / Aniso diffraction limit axis 1 ortho3: 0 / Aniso diffraction limit axis 2 ortho1: 0 / Aniso diffraction limit axis 2 ortho2: 1 / Aniso diffraction limit axis 2 ortho3: 0 / Aniso diffraction limit axis 3 ortho1: 0 / Aniso diffraction limit axis 3 ortho2: 0 / Aniso diffraction limit axis 3 ortho3: 1 / Net I/σ(I): 14.54 / Num. measured all: 996816 / Observed signal threshold: 1.2 / Orthogonalization convention: pdb / % possible anomalous: 93.8 / % possible ellipsoidal: 94 / % possible ellipsoidal anomalous: 93.8 / % possible spherical: 76.7 / % possible spherical anomalous: 75.9 / Redundancy anomalous: 6.55 / Signal type: local
Reflection shell
Resolution (Å)Redundancy (%)Rmerge(I) obsMean I/σ(I) obsNum. measured allNum. measured obsNum. unique allNum. unique obsCC1/2CC1/2 anomalousRpim(I) allRrim(I) allAbsDiff over sigma anomalous% possible anomalous% possible ellipsoidal% possible ellipsoidal anomalous% possible spherical% possible spherical anomalousRedundancy anomalous% possible all
3.652-39.90512.610.042853.34895748957388338830.999-0.4440.01240.04460.53999.899.899.899.899.86.6299.8
2.889-3.65212.070.047345.214695346953389038900.999-0.3480.01390.04930.70499.899.899.899.899.86.2299.8
2.521-2.88912.770.060836.954964849648388838880.999-0.1830.01770.06330.78699.899.899.899.899.86.5499.8
2.286-2.52113.560.07631.115272552725388738870.998-0.2040.02140.0790.74199.899.899.899.899.86.9499.8
2.121-2.28613.890.094126.345402354023388838880.998-0.2050.02630.09780.7799.899.899.899.899.87.199.8
1.995-2.12112.680.123720.44929649296388838880.997-0.1340.0360.12890.7561001001001001006.45100
1.895-1.99513.210.169915.675133251332388738870.995-0.0940.04850.17670.7251001001001001006.72100
1.812-1.89513.240.223412.075141451414388338830.992-0.0820.06380.23240.731001001001001006.73100
1.741-1.81212.350.28759.314806348063389138910.987-0.0530.08510.30.7141001001001001006.26100
1.681-1.74113.090.47.035089950899388938890.976-0.0320.11480.41640.721001001001001006.64100
1.628-1.68113.450.45386.285228852288388738870.9710.0150.12860.47190.731001001001001006.82100
1.581-1.62813.480.5275.325242752427388838880.96-0.0060.14920.54790.70299.899.899.899.899.86.8499.8
1.539-1.58113.470.62814.485231152311388338830.947-0.0040.17790.6530.69999.199.299.199.299.16.8299.2
1.5-1.53913.380.72573.825202152021388938890.931-0.0190.20630.75470.71596.296.396.29695.96.7896.3
1.462-1.512.190.86293.024736847368388538850.895-0.0120.25720.90090.71295.395.595.390.890.56.1895.5
1.423-1.46212.120.98622.594712147121388838880.847-0.030.29471.02990.6928989.48978.778.16.1789.4
1.379-1.42312.881.00712.585012050120389038900.8540.0020.29121.04880.70778.879.578.862.461.56.5679.5
1.333-1.37911.761.24321.974571345713388638860.784-0.0310.37661.29990.68675.376.275.351.149.96.0276.2
1.284-1.33312.291.30471.874782247822389038900.757-0.0010.3851.36130.68978.479.378.442.841.46.3379.3
1.219-1.28411.921.5581.514631546315388638860.68-0.0310.46651.62790.6688080.18026.625.36.1880.1

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Processing

Software
NameVersionClassification
BUSTER2.10.4refinement
autoPROC1.0.5 20220608data processing
autoPROCJan 10, 2022data processing
Aimless0.7.9data scaling
autoPROC2.3.87data processing
XDS20220820data reduction
PHASER2.8.3phasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 1.219→39.91 Å / Cor.coef. Fo:Fc: 0.95 / Cor.coef. Fo:Fc free: 0.953 / SU R Cruickshank DPI: 0.056 / Cross valid method: THROUGHOUT / SU R Blow DPI: 0.053 / SU Rfree Blow DPI: 0.052 / SU Rfree Cruickshank DPI: 0.05
RfactorNum. reflection% reflectionSelection details
Rfree0.1876 3882 -RANDOM
Rwork0.1749 ---
obs0.1755 77746 76.7 %-
Displacement parametersBiso mean: 16.64 Å2
Baniso -1Baniso -2Baniso -3
1-0.2698 Å20 Å20 Å2
2--0.2698 Å20 Å2
3----0.5396 Å2
Refine analyzeLuzzati coordinate error obs: 0.15 Å
Refinement stepCycle: LAST / Resolution: 1.219→39.91 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2753 0 68 331 3152
Refine LS restraints
Refine-IDTypeDev idealNumberRestraint functionWeight
X-RAY DIFFRACTIONt_bond_d0.0135759HARMONIC2
X-RAY DIFFRACTIONt_angle_deg1.2910490HARMONIC2
X-RAY DIFFRACTIONt_dihedral_angle_d1737SINUSOIDAL2
X-RAY DIFFRACTIONt_gen_planes891HARMONIC5
X-RAY DIFFRACTIONt_it5759HARMONIC10
X-RAY DIFFRACTIONt_chiral_improper_torsion412SEMIHARMONIC5
X-RAY DIFFRACTIONt_ideal_dist_contact6667SEMIHARMONIC4
X-RAY DIFFRACTIONt_omega_torsion4.9
X-RAY DIFFRACTIONt_other_torsion13.46
LS refinement shellResolution: 1.22→1.25 Å
RfactorNum. reflection% reflection
Rfree0.2395 65 -
Rwork0.2323 --
obs0.2326 1555 20.36 %
Refinement TLS params.

Refine-ID: X-RAY DIFFRACTION

IDL112)L122)L132)L222)L232)L332)S11 (Å °)S12 (Å °)S13 (Å °)S21 (Å °)S22 (Å °)S23 (Å °)S31 (Å °)S32 (Å °)S33 (Å °)T112)T122)T132)T222)T232)T332)Origin x (Å)Origin y (Å)Origin z (Å)
10.2370.09730.10551.6426-0.10270.18970.0283-0.1163-0.0091-0.1163-0.06060.0221-0.00910.02210.03230.10850.00460.00960.1168-0.0030.12458.9054-6.6618-30.9398
20.6599-0.00060.09680.87720.12860.6534-0.0060.1009-0.02620.10090.02240.0642-0.02620.0642-0.01640.09490.0043-0.00560.10560.01310.106231.9653-10.0643-9.4724
30.7211-0.35810.45730.8406-0.34440.67140.01670.0699-0.00770.0699-0.04350.0987-0.00770.09870.02680.09850.0021-0.00730.12690.01730.159442.788-12.0666-11.6125
40.292-0.18040.21861.8795-0.70180.46220.0524-0.0806-0.0301-0.0806-0.13230.1026-0.03010.10260.07990.1104-0.0030.01690.1430.00650.174539.8788-1.9702-21.6978
50.3646-0.03750.08930.60180.04140.3683-0.0089-0.0476-0.0081-0.04760.00180.0456-0.00810.04560.0070.08890.00110.01270.09710.00860.100427.2853-5.5859-23.3361
60.49960.17230.29130.68520.12220.42990.03150.05320.04060.0532-0.005-0.03760.0406-0.0376-0.02660.08860.00530.00750.09690.00860.104617.3688-21.1154-15.6373
70.43180.1158-0.75060.2072-0.20081.27470.03980.0519-0.10680.0519-0.04920.0491-0.10680.04910.00940.1203-0.00480.00590.1276-0.01250.1321.6017-12.8264-16.2999
Refinement TLS group
IDRefine-IDRefine TLS-IDSelection detailsAuth asym-IDAuth seq-ID
1X-RAY DIFFRACTION1{ A|2 - A|30 }A2 - 30
2X-RAY DIFFRACTION2{ A|31 - A|115 }A31 - 115
3X-RAY DIFFRACTION3{ A|116 - A|138 }A116 - 138
4X-RAY DIFFRACTION4{ A|139 - A|170 }A139 - 170
5X-RAY DIFFRACTION5{ A|171 - A|313 }A171 - 313
6X-RAY DIFFRACTION6{ A|314 - A|361 }A314 - 361
7X-RAY DIFFRACTION7{ A|362 - A|386 }A362 - 386

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