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- PDB-2qp6: The crystal structure of the complex of hcaII with a bioreductive... -

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Basic information

Entry
Database: PDB / ID: 2qp6
TitleThe crystal structure of the complex of hcaII with a bioreductive antitumor derivative
ComponentsCarbonic anhydrase 2
KeywordsLYASE / CARBONIC ANHYDRASE II
Function / homology
Function and homology information


positive regulation of cellular pH reduction / positive regulation of dipeptide transmembrane transport / regulation of monoatomic anion transport / secretion / cyanamide hydratase / cyanamide hydratase activity / arylesterase activity / regulation of chloride transport / angiotensin-activated signaling pathway / Reversible hydration of carbon dioxide ...positive regulation of cellular pH reduction / positive regulation of dipeptide transmembrane transport / regulation of monoatomic anion transport / secretion / cyanamide hydratase / cyanamide hydratase activity / arylesterase activity / regulation of chloride transport / angiotensin-activated signaling pathway / Reversible hydration of carbon dioxide / regulation of intracellular pH / positive regulation of synaptic transmission, GABAergic / hydro-lyase activity / morphogenesis of an epithelium / carbonic anhydrase / carbonate dehydratase activity / carbon dioxide transport / Erythrocytes take up oxygen and release carbon dioxide / Erythrocytes take up carbon dioxide and release oxygen / neuron cellular homeostasis / apical part of cell / one-carbon metabolic process / myelin sheath / extracellular exosome / zinc ion binding / plasma membrane / cytosol / cytoplasm
Similarity search - Function
Carbonic Anhydrase II / Alpha carbonic anhydrase / Carbonic anhydrase, alpha-class, conserved site / Alpha-carbonic anhydrases signature. / Carbonic anhydrase, alpha-class / Alpha carbonic anhydrase domain / Alpha carbonic anhydrase domain superfamily / Eukaryotic-type carbonic anhydrase / Alpha-carbonic anhydrases profile. / Eukaryotic-type carbonic anhydrase ...Carbonic Anhydrase II / Alpha carbonic anhydrase / Carbonic anhydrase, alpha-class, conserved site / Alpha-carbonic anhydrases signature. / Carbonic anhydrase, alpha-class / Alpha carbonic anhydrase domain / Alpha carbonic anhydrase domain superfamily / Eukaryotic-type carbonic anhydrase / Alpha-carbonic anhydrases profile. / Eukaryotic-type carbonic anhydrase / Roll / Alpha Beta
Similarity search - Domain/homology
: / 2-chloro-5-nitrobenzenesulfonamide / MERCURIBENZOIC ACID / Carbonic anhydrase 2
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / FOURIER SYNTHESIS / Resolution: 1.45 Å
AuthorsD'Ambrosio, K. / De Simone, G.
CitationJournal: J.Med.Chem. / Year: 2008
Title: Carbonic Anhydrase Inhibitors: Bioreductive Nitro-Containing Sulfonamides with Selectivity for Targeting the Tumor Associated Isoforms IX and XII.
Authors: D'Ambrosio, K. / Vitale, R.M. / Dogne, J.M. / Masereel, B. / Innocenti, A. / Scozzafava, A. / De Simone, G. / Supuran, C.T.
History
DepositionJul 23, 2007Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jun 3, 2008Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Carbonic anhydrase 2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)30,0186
Polymers29,1581
Non-polymers8605
Water6,431357
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)42.069, 41.238, 71.829
Angle α, β, γ (deg.)90.00, 104.20, 90.00
Int Tables number4
Space group name H-MP1211

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Components

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Protein , 1 types, 1 molecules A

#1: Protein Carbonic anhydrase 2 / / Carbonic anhydrase II / Carbonate dehydratase II / CA-II / Carbonic anhydrase C


Mass: 29157.863 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: ERYTHROCYTES / Source: (natural) Homo sapiens (human) / References: UniProt: P00918, carbonic anhydrase

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Non-polymers , 6 types, 362 molecules

#2: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Zn
#3: Chemical ChemComp-CL / CHLORIDE ION / Chloride


Mass: 35.453 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Cl
#4: Chemical ChemComp-HG / MERCURY (II) ION / Mercury (element)


Mass: 200.590 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Hg
#5: Chemical ChemComp-MBO / MERCURIBENZOIC ACID


Mass: 321.703 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C7H5HgO2
#6: Chemical ChemComp-MB1 / 2-chloro-5-nitrobenzenesulfonamide


Mass: 236.633 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C6H5ClN2O4S
#7: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 357 / 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: 2.07 Å3/Da / Density % sol: 40.62 %
Crystal growTemperature: 277 K / Method: vapor diffusion, hanging drop / pH: 8.2
Details: AMMONIUM SULPHATE, SODIUM CHLORIDE, TRIS-HCl, pH 8.2, VAPOR DIFFUSION, HANGING DROP, temperature 277 K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ELETTRA / Beamline: 5.2R / Wavelength: 1.2 Å
DetectorType: MARRESEARCH / Detector: CCD / Date: Oct 10, 2005
RadiationMonochromator: GRAPHITE / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.2 Å / Relative weight: 1
ReflectionResolution: 1.45→20 Å / Num. all: 118328 / Num. obs: 41454 / % possible obs: 97.3 % / Rsym value: 0.045 / Net I/σ(I): 18.6
Reflection shellResolution: 1.45→1.5 Å / Mean I/σ(I) obs: 4.1 / Num. unique all: 3273 / Rsym value: 0.211 / % possible all: 77.2

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Processing

Software
NameClassification
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing
RefinementMethod to determine structure: FOURIER SYNTHESIS
Starting model: PDB entry 1CA2

1ca2


Resolution: 1.45→20 Å / σ(F): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflection
Rfree0.207 2083 -
Rwork0.192 --
all-41454 -
obs-41437 97.3 %
Refinement stepCycle: LAST / Resolution: 1.45→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2107 0 27 357 2491
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_angle_deg1.4
X-RAY DIFFRACTIONc_bond_d0.005
LS refinement shellResolution: 1.45→1.46 Å
RfactorNum. reflection
Rfree0.3975 7
Rwork0.2795 -
obs-181

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