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- PDB-1me7: Inosine Monophosphate Dehydrogenase (IMPDH) From Tritrichomonas F... -

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Basic information

Entry
Database: PDB / ID: 1me7
TitleInosine Monophosphate Dehydrogenase (IMPDH) From Tritrichomonas Foetus with RVP and MOA 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
: / MYCOPHENOLIC ACID / RIBAVIRIN 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. / Wu, J. / Luecke, H.
CitationJournal: J.Biol.Chem. / Year: 2002
Title: Crystal Structure of Tritrichomonas foetus Inosine Monophosphate Dehydrogenase in Complex with the Inhibitor Ribavirin Monophosphate Reveals a Catalysis-dependent Ion-binding Site
Authors: Prosise, G.L. / Wu, J. / Luecke, H.
History
DepositionAug 8, 2002Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jan 14, 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 6, 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

Downloads & links

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Assembly

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


Theoretical massNumber of molelcules
Total (without water)56,2475
Polymers55,5401
Non-polymers7074
Water2,162120
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)224,98620
Polymers222,1604
Non-polymers2,82616
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 area22940 Å2
ΔGint-143 kcal/mol
Surface area53460 Å2
MethodPISA, PQS
Unit cell
Length a, b, c (Å)155.068, 155.068, 155.068
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number207
Space group name H-MP432

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Components

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Protein , 1 types, 1 molecules A

#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

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Non-polymers , 5 types, 124 molecules

#2: Chemical ChemComp-NA / SODIUM ION


Mass: 22.990 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Na
#3: Chemical ChemComp-K / POTASSIUM ION


Mass: 39.098 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: K
#4: Chemical ChemComp-RVP / RIBAVIRIN MONOPHOSPHATE


Mass: 324.185 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C8H13N4O8P
#5: Chemical ChemComp-MOA / MYCOPHENOLIC ACID / 6-(1,3-DIHYDRO-7-HYDROXY-5-METHOXY-4-METHYL-1-OXOISOBENZOFURAN-6-YL)-4-METHYL-4-HEXANOIC ACID


Mass: 320.337 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C17H20O6 / Comment: medication, immunosuppressant*YM
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 120 / Source method: isolated from a natural source / Formula: H2O

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Details

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: 2.8 Å3/Da / Density % sol: 56.02 %
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
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetailsChemical formula
115 mg/mlprotein1drop
250 mMTris1droppH8.
350 mM1dropKCl
410 %glycerol1drop
51 mM2-mercaptoethanol1drop
642 %satsodium malonate1reservoir
7100 mMTris1reservoirpH8.0
84 mMPEG4001reservoir
91 mM2-mercaptoethanol1reservoir

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SSRL / Beamline: BL9-1 / Wavelength: 0.97 Å
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Jun 12, 2001
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97 Å / Relative weight: 1
ReflectionResolution: 2.15→50 Å / Num. all: 35240 / Num. obs: 33143 / % possible obs: 94 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 5.3 % / Biso Wilson estimate: 33.1 Å2 / Rmerge(I) obs: 0.072 / Net I/σ(I): 2.05
Reflection shellResolution: 2.15→2.19 Å / Rmerge(I) obs: 0.491 / Mean I/σ(I) obs: 2.05 / Num. unique all: 1354 / % possible all: 79.5
Reflection
*PLUS
Lowest resolution: 50 Å / Num. obs: 35250 / Num. measured all: 620781
Reflection shell
*PLUS
Lowest resolution: 2.28 Å / % possible obs: 79.5 %

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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→49.04 Å / Rfactor Rfree error: 0.006 / Data cutoff high absF: 3210639.17 / 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
Rfree0.264 1712 5.2 %RANDOM
Rwork0.233 ---
all-34692 --
obs-32980 94 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 41.5379 Å2 / ksol: 0.361162 e/Å3
Displacement parametersBiso mean: 44.7 Å2
Baniso -1Baniso -2Baniso -3
1-0 Å20 Å20 Å2
2--0 Å20 Å2
3---0 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.35 Å0.29 Å
Luzzati d res low-5 Å
Luzzati sigma a0.28 Å0.25 Å
Refinement stepCycle: LAST / Resolution: 2.15→49.04 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2782 0 46 120 2948
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_d22.5
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d0.71
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it1.191.5
X-RAY DIFFRACTIONc_mcangle_it2.072
X-RAY DIFFRACTIONc_scbond_it1.632
X-RAY DIFFRACTIONc_scangle_it2.52.5
LS refinement shellResolution: 2.15→2.28 Å / Rfactor Rfree error: 0.023 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.329 215 4.8 %
Rwork0.288 4218 -
obs--77.3 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2PARAM.GNSOLRMP.TOP
X-RAY DIFFRACTION3CIS_PEPTIDE.PARAMMPA.TOP
X-RAY DIFFRACTION4RMP_MPA.PARION.TOP
X-RAY DIFFRACTION5ION.PARAMTOPH.GNSOL
Refinement
*PLUS
Lowest resolution: 50 Å / Rfactor Rfree: 0.265
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_dihedral_angle_deg22.6
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_improper_angle_deg0.7

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