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- PDB-1mew: Inosine Monophosphate Dehydrogenase (IMPDH) From Tritrichomonas F... -

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Basic information

Entry
Database: PDB / ID: 1mew
TitleInosine Monophosphate Dehydrogenase (IMPDH) From Tritrichomonas Foetus with XMP and NAD bound
ComponentsINOSINE-5'-MONOPHOSPHATE DEHYDROGENASE
KeywordsOXIDOREDUCTASE / alpha beta barrel
Function / homology
Function and homology information


IMP dehydrogenase activity / IMP dehydrogenase / GMP biosynthetic process / GTP biosynthetic process / nucleotide binding / protein-containing complex / metal ion binding / identical protein binding / cytoplasm
Similarity search - Function
Inosine-5'-monophosphate dehydrogenase / IMP dehydrogenase / GMP reductase, conserved site / IMP dehydrogenase / GMP reductase signature. / IMP dehydrogenase/GMP reductase / IMP dehydrogenase / GMP reductase domain / IMP dehydrogenase / GMP reductase domain / CBS domain superfamily / CBS domain / CBS domain / CBS domain profile. ...Inosine-5'-monophosphate dehydrogenase / IMP dehydrogenase / GMP reductase, conserved site / IMP dehydrogenase / GMP reductase signature. / IMP dehydrogenase/GMP reductase / IMP dehydrogenase / GMP reductase domain / IMP dehydrogenase / GMP reductase domain / CBS domain superfamily / CBS domain / CBS domain / CBS domain profile. / Aldolase class I / Aldolase-type TIM barrel / TIM Barrel / Alpha-Beta Barrel / Alpha Beta
Similarity search - Domain/homology
: / NICOTINAMIDE-ADENINE-DINUCLEOTIDE / XANTHOSINE-5'-MONOPHOSPHATE / Inosine-5'-monophosphate dehydrogenase
Similarity search - Component
Biological speciesTritrichomonas foetus (eukaryote)
MethodX-RAY DIFFRACTION / SYNCHROTRON / FOURIER SYNTHESIS / Resolution: 2.15 Å
AuthorsProsise, G.L. / Luecke, H.
CitationJournal: J.Mol.Biol. / Year: 2003
Title: Crystal Structures of Tritrichomonas foetus Inosine Monophosphate Dehydrogenase in Complex with Substrate, Cofactor and Analogs: A Structural Basis for the Random-in Ordered-out Kinetic Mechanism
Authors: Prosise, G.L. / Luecke, H.
History
DepositionAug 8, 2002Deposition site: RCSB / Processing site: RCSB
Revision 1.0Aug 12, 2003Provider: repository / Type: Initial release
Revision 1.1Apr 28, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Derived calculations / Version format compliance
Revision 1.3Nov 13, 2024Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_entry_details / pdbx_initial_refinement_model / pdbx_modification_feature / pdbx_struct_conn_angle / struct_conn / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr1_symmetry / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.ptnr3_symmetry / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr1_symmetry / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_conn.ptnr2_symmetry / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: INOSINE-5'-MONOPHOSPHATE DEHYDROGENASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)56,6084
Polymers55,5401
Non-polymers1,0683
Water2,954164
1
A: INOSINE-5'-MONOPHOSPHATE DEHYDROGENASE
hetero molecules

A: INOSINE-5'-MONOPHOSPHATE DEHYDROGENASE
hetero molecules

A: INOSINE-5'-MONOPHOSPHATE DEHYDROGENASE
hetero molecules

A: INOSINE-5'-MONOPHOSPHATE DEHYDROGENASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)226,43116
Polymers222,1604
Non-polymers4,27112
Water724
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_665-x+1,-y+1,z1
crystal symmetry operation15_565y,-x+1,z1
crystal symmetry operation16_655-y+1,x,z1
Buried area19330 Å2
ΔGint-96 kcal/mol
Surface area50610 Å2
MethodPISA, PQS
Unit cell
Length a, b, c (Å)153.827, 153.827, 153.827
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number207
Space group name H-MP432

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Components

#1: Protein INOSINE-5'-MONOPHOSPHATE DEHYDROGENASE / IMP DEHYDROGENASE / IMPDH


Mass: 55540.012 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Tritrichomonas foetus (eukaryote) / Gene: IMPDH / Plasmid: pBACE / Production host: Escherichia coli (E. coli) / Strain (production host): H712 / References: UniProt: P50097, IMP dehydrogenase
#2: Chemical ChemComp-K / POTASSIUM ION


Mass: 39.098 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: K
#3: 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
#4: Chemical ChemComp-NAD / NICOTINAMIDE-ADENINE-DINUCLEOTIDE


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


Mass: 18.015 Da / Num. of mol.: 164 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationY

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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: 2.73 Å3/Da / Density % sol: 54.94 %
Crystal growTemperature: 293 K / Method: vapor diffusion, sitting drop / pH: 7.5
Details: sodium malonate, Tris, 2-mercaptoethanol, EDTA, glycerol, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Crystal grow
*PLUS
Temperature: 20 ℃ / pH: 8 / Method: vapor diffusion, sitting drop
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetailsChemical formula
110-15 mg/mlprotein1drop
250 mMTris1droppH8.
350 mM1dropKCl
410 %(v/v)glycerol1drop
51 mM2-mercaptoethanol1drop
62.4 Mammonium sulfate1reservoir
7100 mMTris1reservoirpH8.0
810 %glycerol1reservoir
94 mMPEG4001reservoir
101 mM2-mercaptoethanol1reservoir

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ALS / Beamline: 5.0.2 / Wavelength: 1 Å
DetectorType: ADSC QUANTUM 4 / Detector: CCD / Date: Nov 1, 2000
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 2.15→50 Å / Num. all: 34423 / Num. obs: 33857 / % possible obs: 98.4 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 5.4 % / Biso Wilson estimate: 28.8 Å2 / Rmerge(I) obs: 0.08 / Net I/σ(I): 19
Reflection shellResolution: 2.15→2.19 Å / Rmerge(I) obs: 0.58 / Mean I/σ(I) obs: 2.2 / Num. unique all: 1604 / % possible all: 95.9
Reflection
*PLUS
Num. measured all: 734853 / Rmerge(I) obs: 0.08
Reflection shell
*PLUS
Lowest resolution: 2.28 Å / % possible obs: 95.9 % / Rmerge(I) obs: 0.578 / Mean I/σ(I) obs: 2.22

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Processing

Software
NameClassification
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
CNSphasing
RefinementMethod to determine structure: FOURIER SYNTHESIS
Starting model: pdb entry 1AK5

1ak5


Resolution: 2.15→29.61 Å / Rfactor Rfree error: 0.006 / Data cutoff high absF: 3426655.95 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.246 1768 5.2 %RANDOM
Rwork0.224 ---
all-35625 --
obs-33857 98.3 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 41.9441 Å2 / ksol: 0.384288 e/Å3
Displacement parametersBiso mean: 36.1 Å2
Baniso -1Baniso -2Baniso -3
1-0 Å20 Å20 Å2
2--0 Å20 Å2
3---0 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.3 Å0.26 Å
Luzzati d res low-5 Å
Luzzati sigma a0.28 Å0.22 Å
Refinement stepCycle: LAST / Resolution: 2.15→29.61 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2635 0 69 164 2868
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.006
X-RAY DIFFRACTIONc_bond_d_na
X-RAY DIFFRACTIONc_bond_d_prot
X-RAY DIFFRACTIONc_angle_d
X-RAY DIFFRACTIONc_angle_d_na
X-RAY DIFFRACTIONc_angle_d_prot
X-RAY DIFFRACTIONc_angle_deg1.2
X-RAY DIFFRACTIONc_angle_deg_na
X-RAY DIFFRACTIONc_angle_deg_prot
X-RAY DIFFRACTIONc_dihedral_angle_d22.9
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d0.77
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it0.781.5
X-RAY DIFFRACTIONc_mcangle_it1.412
X-RAY DIFFRACTIONc_scbond_it0.92
X-RAY DIFFRACTIONc_scangle_it1.482.5
LS refinement shellResolution: 2.15→2.28 Å / Rfactor Rfree error: 0.017 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.284 270 5 %
Rwork0.258 5092 -
obs--95.8 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2PARAM.GNSOLXMPG.TOP
X-RAY DIFFRACTION3CIS_PEPTIDE.PARAMNAD_PROD.TOP
X-RAY DIFFRACTION4XMPG.PARION.TOP
X-RAY DIFFRACTION5NAD_PROD.PARTOPH.GNSOL
Refinement
*PLUS
Lowest resolution: 20 Å / Rfactor Rwork: 0.223
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_bond_d0.007
X-RAY DIFFRACTIONc_angle_deg1.3
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_dihedral_angle_deg23
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_improper_angle_deg0.8

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