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- PDB-9icd: CATALYTIC MECHANISM OF NADP+-DEPENDENT ISOCITRATE DEHYDROGENASE: ... -

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Basic information

Entry
Database: PDB / ID: 9icd
TitleCATALYTIC MECHANISM OF NADP+-DEPENDENT ISOCITRATE DEHYDROGENASE: IMPLICATIONS FROM THE STRUCTURES OF MAGNESIUM-ISOCITRATE AND NADP+ COMPLEXES
ComponentsISOCITRATE DEHYDROGENASE
KeywordsOXIDOREDUCTASE (NAD(A)-CHOH(D))
Function / homology
Function and homology information


isocitrate dehydrogenase (NADP+) / isocitrate dehydrogenase (NADP+) activity / glyoxylate cycle / guanosine tetraphosphate binding / electron transport chain / tricarboxylic acid cycle / NAD binding / response to oxidative stress / magnesium ion binding / cytosol / cytoplasm
Similarity search - Function
Isocitrate dehydrogenase NADP-dependent, dimeric, prokaryotic / Isocitrate and isopropylmalate dehydrogenases signature. / Isocitrate/isopropylmalate dehydrogenase, conserved site / Isopropylmalate Dehydrogenase / Isopropylmalate Dehydrogenase / Isopropylmalate dehydrogenase-like domain / Isocitrate/isopropylmalate dehydrogenase / Isocitrate/isopropylmalate dehydrogenase / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE / Isocitrate dehydrogenase [NADP]
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / Resolution: 2.5 Å
AuthorsHurley, J.H. / Dean, A.M. / Koshland Jr., D.E. / Stroud, R.M.
Citation
Journal: Biochemistry / Year: 1991
Title: Catalytic mechanism of NADP(+)-dependent isocitrate dehydrogenase: implications from the structures of magnesium-isocitrate and NADP+ complexes.
Authors: Hurley, J.H. / Dean, A.M. / Koshland Jr., D.E. / Stroud, R.M.
#1: Journal: Science / Year: 1990
Title: Regulation of an Enzyme by Phosphorylation at the Active Site
Authors: Hurley, J.H. / Dean, A.M. / Sohl, J.L. / Koshlandjunior, D.E. / Stroud, R.M.
#2: Journal: J.Biol.Chem. / Year: 1990
Title: Regulation of Isocitrate Dehydrogenase by Phosphorylation Involves No Long-Range Conformational Change in the Free Enzyme
Authors: Hurley, J.H. / Dean, A.M. / Thorsness, P.E. / Koshlandjunior, D.E. / Stroud, R.M.
#3: Journal: Science / Year: 1990
Title: Regulation of an Enzyme by Phosphorylation at the Active Site
Authors: Hurley, J.H. / Dean, A.M. / Sohl, J.L. / Koshlandjunior, D.E. / Stroud, R.M.
#4: Journal: Proc.Natl.Acad.Sci.USA / Year: 1989
Title: Structure of a Bacterial Enzyme Regulated by Phosphorylation, Isocitrate Dehydrogenase
Authors: Hurley, J.H. / Thorsness, P.E. / Ramalingam, V. / Helmers, N.H. / Koshlandjunior, D.E. / Stroud, R.M.
History
DepositionJul 29, 1991Processing site: BNL
Revision 1.0Oct 15, 1991Provider: repository / Type: Initial release
Revision 1.1Mar 25, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Derived calculations / Version format compliance
Revision 1.3Nov 29, 2017Group: Derived calculations / Other
Category: pdbx_database_status / struct_conf / struct_conf_type
Item: _pdbx_database_status.process_site

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: ISOCITRATE DEHYDROGENASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)46,5532
Polymers45,8101
Non-polymers7431
Water1,820101
1
A: ISOCITRATE DEHYDROGENASE
hetero molecules

A: ISOCITRATE DEHYDROGENASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)93,1064
Polymers91,6192
Non-polymers1,4872
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation7_555y,x,-z1
Buried area7720 Å2
ΔGint-46 kcal/mol
Surface area30530 Å2
MethodPISA, PQS
Unit cell
Length a, b, c (Å)105.100, 105.100, 150.300
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number96
Space group name H-MP43212
Atom site foot note1: RESIDUE PRO 262 IS A CIS PROLINE. NOTE THAT IT IS IN A / 2: THE REGIONS 17 - 20 AND 258 - 262 ARE POORLY DEFINED.

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Components

#1: Protein ISOCITRATE DEHYDROGENASE /


Mass: 45809.562 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli)
References: UniProt: P08200, isocitrate dehydrogenase (NADP+)
#2: Chemical ChemComp-NAP / NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE / 2'-MONOPHOSPHOADENOSINE 5'-DIPHOSPHORIBOSE / Nicotinamide adenine dinucleotide phosphate


Mass: 743.405 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C21H28N7O17P3
#3: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 101 / Source method: isolated from a natural source / Formula: H2O
Nonpolymer detailsTHE PORTION OF NADP+ CORRESPONDING TO NICOTINAMIDE MONONUCLEOTIDE COULD NOT BE LOCATED IN ...THE PORTION OF NADP+ CORRESPONDING TO NICOTINAMIDE MONONUCLEOTIDE COULD NOT BE LOCATED IN DIFFERENCE DENSITY AND, THEREFORE, HET GROUP *NAP* CONTAINS ONLY THE PORTION OF NADP+ CORRESPONDING TO ADENOSINE 2',5'-DIPHOSPHATE.

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION

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Sample preparation

CrystalDensity Matthews: 4.53 Å3/Da / Density % sol: 72.84 %
Crystal grow
*PLUS
pH: 5.4 / Method: unknown
Details: taken from Hurley, J.H. et al (1989). Proc. Natl. Acad. Sci. USA, 86, 8635-8639.
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
128 mg/mlprotein11
234 %satammonium sulfate11
3100 mM11NaCl
435 mM11Na2HPO4
59 mMcitric acid11
60.2 mMdithiothreitol11

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Data collection

RadiationScattering type: x-ray
Radiation wavelengthRelative weight: 1
Reflection
*PLUS
Highest resolution: 2.5 Å / Num. obs: 29217 / % possible obs: 96.5 % / Rmerge(I) obs: 0.115 / Num. measured all: 141100

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Processing

SoftwareName: X-PLOR / Classification: refinement
RefinementRfactor Rwork: 0.181 / Highest resolution: 2.5 Å
Refinement stepCycle: LAST / Highest resolution: 2.5 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3147 0 27 101 3275
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.016
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_deg3.06
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
Refinement
*PLUS
Highest resolution: 2.5 Å / Lowest resolution: 5 Å / Num. reflection obs: 22342 / Rfactor obs: 0.181
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Type: x_angle_d

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