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- PDB-2iqd: Crystal Structure of Aldose Reductase complexed with Lipoic Acid -

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Basic information

Entry
Database: PDB / ID: 2iqd
TitleCrystal Structure of Aldose Reductase complexed with Lipoic Acid
ComponentsAldose reductase
KeywordsOXIDOREDUCTASE / TIM-Barrel / ARI / aldo-keto reductase / lipoic
Function / homology
Function and homology information


glyceraldehyde oxidoreductase activity / Fructose biosynthesis / fructose biosynthetic process / L-glucuronate reductase activity / aldose reductase / D/L-glyceraldehyde reductase / glycerol dehydrogenase (NADP+) activity / C21-steroid hormone biosynthetic process / NADP-retinol dehydrogenase / Pregnenolone biosynthesis ...glyceraldehyde oxidoreductase activity / Fructose biosynthesis / fructose biosynthetic process / L-glucuronate reductase activity / aldose reductase / D/L-glyceraldehyde reductase / glycerol dehydrogenase (NADP+) activity / C21-steroid hormone biosynthetic process / NADP-retinol dehydrogenase / Pregnenolone biosynthesis / allyl-alcohol dehydrogenase / allyl-alcohol dehydrogenase activity / prostaglandin H2 endoperoxidase reductase activity / regulation of urine volume / metanephric collecting duct development / all-trans-retinol dehydrogenase (NADP+) activity / daunorubicin metabolic process / doxorubicin metabolic process / retinal dehydrogenase (NAD+) activity / aldose reductase (NADPH) activity / epithelial cell maturation / cellular hyperosmotic salinity response / retinoid metabolic process / renal water homeostasis / carbohydrate metabolic process / electron transfer activity / negative regulation of apoptotic process / mitochondrion / extracellular space / extracellular exosome / nucleoplasm / cytosol
Similarity search - Function
Aldo/keto reductase family putative active site signature. / Aldo/keto reductase family signature 1. / NADP-dependent oxidoreductase domain / Aldo/keto reductase family signature 2. / Aldo/keto reductase, conserved site / Aldo-keto reductase / NADP-dependent oxidoreductase domain / Aldo/keto reductase family / NADP-dependent oxidoreductase domain superfamily / TIM Barrel ...Aldo/keto reductase family putative active site signature. / Aldo/keto reductase family signature 1. / NADP-dependent oxidoreductase domain / Aldo/keto reductase family signature 2. / Aldo/keto reductase, conserved site / Aldo-keto reductase / NADP-dependent oxidoreductase domain / Aldo/keto reductase family / NADP-dependent oxidoreductase domain superfamily / TIM Barrel / Alpha-Beta Barrel / Alpha Beta
Similarity search - Domain/homology
LIPOIC ACID / NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE / Aldo-keto reductase family 1 member B1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / FOURIER SYNTHESIS / Resolution: 2 Å
AuthorsHarrison, D.H.T. / Carlson, E. / Pape, E. / Brownlee, J.M.
CitationJournal: Bioorg.Chem. / Year: 2006
Title: Structural and thermodynamic studies of simple aldose reductase-inhibitor complexes.
Authors: Brownlee, J.M. / Carlson, E. / Milne, A.C. / Pape, E. / Harrison, D.H.T.
History
DepositionOct 13, 2006Deposition site: RCSB / Processing site: RCSB
Revision 1.0Nov 28, 2006Provider: repository / Type: Initial release
Revision 1.1May 1, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Oct 18, 2017Group: Refinement description / Category: software
Revision 1.4Aug 30, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _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: Aldose reductase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)36,7173
Polymers35,7671
Non-polymers9502
Water2,846158
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)50.011, 67.023, 91.980
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein Aldose reductase / AR / Aldehyde reductase


Mass: 35767.145 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: AKR1B1, ALDR1 / Plasmid: pET / Species (production host): Escherichia coli / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3) / References: UniProt: P15121, aldose reductase
#2: Chemical ChemComp-NAP / NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE / 2'-MONOPHOSPHOADENOSINE 5'-DIPHOSPHORIBOSE


Mass: 743.405 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C21H28N7O17P3
#3: Chemical ChemComp-LPA / LIPOIC ACID / 5-[(3R)-1,2-dithiolan-3-yl]pentanoic acid


Mass: 206.326 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C8H14O2S2
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 158 / 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: 2.15 Å3/Da / Density % sol: 42.89 %
Crystal growTemperature: 277 K / Method: vapor diffusion, hanging drop / pH: 5
Details: 20 % PEG 6000, 50 mM Citrate, subsequent glutaraldehyde x-linking, ligand soaking, pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 277K

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Data collection

DiffractionMean temperature: 277 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418 Å
DetectorType: RIGAKU RAXIS IIC / Detector: IMAGE PLATE / Date: Oct 14, 1999 / Details: mirrors
RadiationMonochromator: graphite / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2→20 Å / Num. all: 21692 / Num. obs: 17234 / % possible obs: 79.4 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 1.9 % / Rmerge(I) obs: 0.039 / Χ2: 2.679 / Net I/σ(I): 24.5
Reflection shellResolution: 2→2.05 Å / Redundancy: 1.6 % / Rmerge(I) obs: 0.066 / Mean I/σ(I) obs: 15.3 / Num. unique all: 814 / Χ2: 2.198 / % possible all: 57.6

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Processing

Software
NameVersionClassificationNB
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
PDB_EXTRACT2data extraction
HKL-2000data collection
X-PLORphasing
X-PLOR3.851refinement
RefinementMethod to determine structure: FOURIER SYNTHESIS
Starting model: PDB ENTRY 1AZ1

1az1


Resolution: 2→20 Å / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.239 824 -random
Rwork0.193 ---
all0.1952 21692 --
obs0.1952 17199 79.4 %-
Displacement parametersBiso mean: 12.501 Å2
Refinement stepCycle: LAST / Resolution: 2→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2517 0 56 158 2731
LS refinement shellResolution: 2→2.09 Å
RfactorNum. reflection% reflection
Rfree0.2747 83 -
Rwork0.2434 --
obs-1745 53.6 %

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