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- PDB-1oq5: CARBONIC ANHYDRASE II IN COMPLEX WITH NANOMOLAR INHIBITOR -

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Basic information

Entry
Database: PDB / ID: 1oq5
TitleCARBONIC ANHYDRASE II IN COMPLEX WITH NANOMOLAR INHIBITOR
ComponentsCarbonic anhydrase II
KeywordsMETAL BINDING PROTEIN / 10-stranded / twisted beta-sheet
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 / regulation of chloride transport / arylesterase activity / Reversible hydration of carbon dioxide / positive regulation of synaptic transmission, GABAergic ...positive regulation of cellular pH reduction / positive regulation of dipeptide transmembrane transport / regulation of monoatomic anion transport / secretion / cyanamide hydratase / cyanamide hydratase activity / regulation of chloride transport / arylesterase activity / Reversible hydration of carbon dioxide / positive regulation of synaptic transmission, GABAergic / angiotensin-activated signaling pathway / morphogenesis of an epithelium / regulation of intracellular pH / 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 / one-carbon metabolic process / apical part of cell / 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
Chem-CEL / Carbonic anhydrase 2
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 1.5 Å
AuthorsWeber, A. / Casini, A. / Heine, A. / Kuhn, D. / Supuran, C.T. / Scozzafava, A. / Klebe, G.
CitationJournal: J.Med.Chem. / Year: 2004
Title: Unexpected nanomolar inhibition of carbonic anhydrase by COX-2-selective celecoxib: new pharmacological opportunities due to related binding site recognition.
Authors: Weber, A. / Casini, A. / Heine, A. / Kuhn, D. / Supuran, C.T. / Scozzafava, A. / Klebe, G.
History
DepositionMar 7, 2003Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 23, 2004Provider: repository / Type: Initial release
Revision 1.1Apr 29, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Oct 11, 2017Group: Refinement description / Category: software
Revision 1.4Aug 16, 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 / 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_seq_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _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.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_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Remark 999SEQRES Residues 125 and 127 are adjacent in the sequence.

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Carbonic anhydrase II
hetero molecules


Theoretical massNumber of molelcules
Total (without water)29,6053
Polymers29,1581
Non-polymers4472
Water4,197233
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)42.010, 41.070, 71.930
Angle α, β, γ (deg.)90.00, 104.20, 90.00
Int Tables number4
Space group name H-MP1211

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Components

#1: Protein 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: From human erythrocytes / Source: (natural) Homo sapiens (human) / References: UniProt: P00918, carbonic anhydrase
#2: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Zn
#3: Chemical ChemComp-CEL / 4-[5-(4-METHYLPHENYL)-3-(TRIFLUOROMETHYL)-1H-PYRAZOL-1-YL]BENZENESULFONAMIDE / CELECOXIB


Mass: 381.372 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C17H14F3N3O2S / Comment: antiinflammatory, inhibitor*YM
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 233 / 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: 1.73 Å3/Da / Density % sol: 28.8 %
Crystal growTemperature: 277 K / Method: vapor diffusion, hanging drop / pH: 8.2
Details: Tris-HCl, NaCl, ammonium sulfate, pH 8.2, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Crystal grow
*PLUS
Temperature: 4 ℃
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetailsChemical formula
15 mg/mlenzyme1drop
22.5 Mammonium sulfate1reservoir
30.1 MTris-HCl1reservoirpH8.2
40.3 M1reservoirNaCl

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Data collection

DiffractionMean temperature: 103 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU / Wavelength: 1.54178 Å
DetectorType: RIGAKU RAXIS IV / Detector: IMAGE PLATE / Date: Nov 26, 2002
RadiationMonochromator: Osmic mirrors / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.54178 Å / Relative weight: 1
ReflectionResolution: 1.5→30 Å / Num. all: 35103 / Num. obs: 35103 / % possible obs: 91.5 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 3.5 % / Rsym value: 0.093 / Net I/σ(I): 18.8
Reflection shellResolution: 1.5→1.53 Å / Mean I/σ(I) obs: 2.8 / Num. unique all: 694 / Rsym value: 0.311 / % possible all: 37
Reflection
*PLUS
Highest resolution: 1.5 Å / Lowest resolution: 30 Å / Num. measured all: 123343 / Rmerge(I) obs: 0.093
Reflection shell
*PLUS
Highest resolution: 1.5 Å / % possible obs: 37 % / Rmerge(I) obs: 0.311

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Processing

Software
NameClassification
SHELXmodel building
SHELXL-97refinement
SCALEPACKdata scaling
AMoREphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1CIL

1cil


Resolution: 1.5→10 Å / Num. parameters: 20762 / Num. restraintsaints: 26228 / Cross valid method: FREE R / σ(F): 0 / Stereochemistry target values: Engh & Huber
Details: ANISOTROPIC SCALING APPLIED BY THE METHOD OF PARKIN, MOEZZI & HOPE, J.APPL.CRYST.28(1995)53-56 ANISOTROPIC REFINEMENT
RfactorNum. reflection% reflectionSelection details
Rfree0.1887 1716 5 %RANDOM
Rwork0.1291 ---
all0.1307 34555 --
obs0.1291 34555 90.5 %-
Displacement parametersBiso mean: 22.3 Å2
Refine analyzeNum. disordered residues: 2 / Occupancy sum hydrogen: 1983 / Occupancy sum non hydrogen: 2296
Refinement stepCycle: LAST / Resolution: 1.5→10 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2045 0 27 233 2305
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONs_bond_d0.009
X-RAY DIFFRACTIONs_angle_d0.028
X-RAY DIFFRACTIONs_similar_dist0
X-RAY DIFFRACTIONs_from_restr_planes0.0198
X-RAY DIFFRACTIONs_zero_chiral_vol0.048
X-RAY DIFFRACTIONs_non_zero_chiral_vol0.056
X-RAY DIFFRACTIONs_anti_bump_dis_restr0.018
X-RAY DIFFRACTIONs_rigid_bond_adp_cmpnt0.003
X-RAY DIFFRACTIONs_similar_adp_cmpnt0.057
X-RAY DIFFRACTIONs_approx_iso_adps0.08
Software
*PLUS
Name: SHELXL / Version: 97 / Classification: refinement
Refinement
*PLUS
Highest resolution: 1.5 Å / Lowest resolution: 10 Å / % reflection Rfree: 5 % / Rfactor Rfree: 0.184 / Rfactor Rwork: 0.127
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONs_angle_d
X-RAY DIFFRACTIONs_angle_deg2.1
X-RAY DIFFRACTIONs_plane_restr0.02
X-RAY DIFFRACTIONs_chiral_restr0.048

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