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- PDB-1xaa: 3-ISOPROPYLMALATE DEHYDROGENASE, LOW TEMPERATURE (100K) STRUCTURE -

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Basic information

Entry
Database: PDB / ID: 1xaa
Title3-ISOPROPYLMALATE DEHYDROGENASE, LOW TEMPERATURE (100K) STRUCTURE
Components3-ISOPROPYLMALATE DEHYDROGENASE
KeywordsOXIDOREDUCTASE
Function / homology
Function and homology information


3-isopropylmalate dehydrogenase / 3-isopropylmalate dehydrogenase activity / L-leucine biosynthetic process / NAD binding / magnesium ion binding / identical protein binding / cytosol
Similarity search - Function
Isopropylmalate dehydrogenase / Isopropylmalate Dehydrogenase / Isopropylmalate Dehydrogenase / Isocitrate/isopropylmalate dehydrogenase, conserved site / Isocitrate and isopropylmalate dehydrogenases signature. / Isopropylmalate dehydrogenase-like domain / Isocitrate/isopropylmalate dehydrogenase / Isocitrate/isopropylmalate dehydrogenase / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
3-isopropylmalate dehydrogenase
Similarity search - Component
Biological speciesThermus thermophilus (bacteria)
MethodX-RAY DIFFRACTION / Resolution: 2.1 Å
AuthorsNagata, C. / Moriyama, H. / Tanaka, N.
Citation
Journal: Acta Crystallogr.,Sect.D / Year: 1996
Title: Cryocrystallography of 3-Isopropylmalate dehydrogenase from Thermus thermophilus and its chimeric enzyme.
Authors: Nagata, C. / Moriyama, H. / Tanaka, N. / Nakasako, M. / Yamamoto, M. / Ueki, T. / Oshima, T.
#1: Journal: J.Biochem.(Tokyo) / Year: 1990
Title: Purification, Catalytic Properties and Thermal Stability of Threo-Ds-3-Isopropylmalate Dehydrogenase Coded by Leub Gene from an Extreme Thermophile, Thermus Thermophilus Strain Hb8
Authors: Yamada, T. / Akutsu, N. / Miyazaki, K. / Kakinuma, K. / Yoshida, M. / Oshima, T.
History
DepositionNov 9, 1995Processing site: BNL
Revision 1.0Apr 3, 1996Provider: repository / Type: Initial release
Revision 1.1Mar 24, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Derived calculations / Source and taxonomy / Version format compliance
Revision 1.3Feb 14, 2024Group: Data collection / Database references / Other
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_database_status
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_database_status.process_site

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: 3-ISOPROPYLMALATE DEHYDROGENASE


Theoretical massNumber of molelcules
Total (without water)36,8251
Polymers36,8251
Non-polymers00
Water5,332296
1
A: 3-ISOPROPYLMALATE DEHYDROGENASE

A: 3-ISOPROPYLMALATE DEHYDROGENASE


Theoretical massNumber of molelcules
Total (without water)73,6502
Polymers73,6502
Non-polymers00
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation6_554-x,-x+y,-z-1/31
Buried area4360 Å2
ΔGint-29 kcal/mol
Surface area25460 Å2
MethodPISA, PQS
Unit cell
Length a, b, c (Å)77.000, 77.000, 156.400
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number154
Space group name H-MP3221
Atom site foot note1: CIS PROLINE - PRO 143

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Components

#1: Protein 3-ISOPROPYLMALATE DEHYDROGENASE / IPMDH / IMDH


Mass: 36825.160 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: LOW TEMPERATURE (100K) STRUCTURE / Source: (natural) Thermus thermophilus (bacteria) / Strain: HB8
References: UniProt: Q5SIY4, 3-isopropylmalate dehydrogenase
#2: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 296 / 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: 3.63 Å3/Da / Density % sol: 66.13 %
Crystal
*PLUS
Density % sol: 67.3 %
Crystal grow
*PLUS
Temperature: 100 K / pH: 7.5 / Method: microdialysis
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-ID
110 mMHEPES11
22.2 Mammonium sulfate11
322 %(w/v)glycerol11

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceWavelength: 1.5418 Å
DetectorType: RIGAKU RAXIS IIC / Detector: IMAGE PLATE / Date: Aug 8, 1995
RadiationMonochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionNum. obs: 19388 / % possible obs: 59.8 % / Observed criterion σ(I): 1 / Redundancy: 0.598 % / Rmerge(I) obs: 0.058
Reflection
*PLUS
Highest resolution: 2.1 Å / Rmerge(I) obs: 0.058

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Processing

Software
NameClassification
X-PLORmodel building
X-PLORrefinement
PROCESSdata reduction
X-PLORphasing
RefinementResolution: 2.1→8 Å / σ(F): 2 /
RfactorNum. reflection
Rwork0.157 -
obs0.157 18775
Displacement parametersBiso mean: 22.7 Å2
Refinement stepCycle: LAST / Resolution: 2.1→8 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2595 0 0 296 2891
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.015
X-RAY DIFFRACTIONx_bond_d_na
X-RAY DIFFRACTIONx_bond_d_prot
X-RAY DIFFRACTIONx_angle_d
X-RAY DIFFRACTIONx_angle_d_na
X-RAY DIFFRACTIONx_angle_d_prot
X-RAY DIFFRACTIONx_angle_deg
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_d_na
X-RAY DIFFRACTIONx_improper_angle_d_prot
X-RAY DIFFRACTIONx_mcbond_it
X-RAY DIFFRACTIONx_mcangle_it
X-RAY DIFFRACTIONx_scbond_it
X-RAY DIFFRACTIONx_scangle_it
Software
*PLUS
Name: X-PLOR / Classification: refinement
Refinement
*PLUS
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Type: x_angle_deg / Dev ideal: 2.99

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