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- PDB-4k13: Structure of HCAIX mimic (HCAII with 5 mutations in active site) ... -

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Basic information

Entry
Database: PDB / ID: 4k13
TitleStructure of HCAIX mimic (HCAII with 5 mutations in active site) in complex with dorzolamide
ComponentsCarbonic anhydrase 2
KeywordsLYASE / alpha beta fold
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 / Reversible hydration of carbon dioxide / morphogenesis of an epithelium ...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 / Reversible hydration of carbon dioxide / morphogenesis of an epithelium / angiotensin-activated signaling pathway / positive regulation of synaptic transmission, GABAergic / 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 / 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-ETS / Carbonic anhydrase 2
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 1.6 Å
AuthorsBiswas, S. / McKenna, R.
CitationJournal: To be Published
Title: Developing isoform specific inhibitors for hCAIX using CAIX mimic
Authors: Biswas, S. / West, D. / Pinard, M. / McKenna, R.
History
DepositionApr 4, 2013Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 9, 2014Provider: repository / Type: Initial release
Revision 1.1Jul 17, 2019Group: Advisory / Data collection / Refinement description / Category: pdbx_unobs_or_zero_occ_atoms / software
Item: _software.contact_author / _software.contact_author_email ..._software.contact_author / _software.contact_author_email / _software.language / _software.location / _software.name / _software.type / _software.version
Revision 1.2Sep 20, 2023Group: Advisory / Data collection ...Advisory / 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_unobs_or_zero_occ_atoms / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_ref_seq_dif.details / _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

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Assembly

Deposited unit
A: Carbonic anhydrase 2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)29,4475
Polymers28,9011
Non-polymers5464
Water5,603311
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)41.991, 41.269, 72.484
Angle α, β, γ (deg.)90.000, 103.760, 90.000
Int Tables number4
Space group name H-MP1211

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Components

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


Mass: 28900.574 Da / Num. of mol.: 1 / Mutation: A65S, N67Q, E69T, F131L, K170E
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CA2 / Production host: Escherichia coli (E. coli) / Strain (production host): BL21(DE3) / 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-DMS / DIMETHYL SULFOXIDE


Mass: 78.133 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C2H6OS / Comment: DMSO, precipitant*YM
#4: Chemical ChemComp-ETS / (4S-TRANS)-4-(ETHYLAMINO)-5,6-DIHYDRO-6-METHYL-4H-THIENO(2,3-B)THIOPYRAN-2-SULFONAMIDE-7,7-DIOXIDE / Dorzolamide


Mass: 324.440 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H16N2O4S3
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 311 / 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: 2.11 Å3/Da / Density % sol: 41.73 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 8
Details: 1.6 M sodium citrate, 50 mM Tris, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RUH3R / Wavelength: 1.54 Å
DetectorType: RIGAKU RAXIS IV++ / Detector: IMAGE PLATE / Date: Feb 22, 2012
RadiationMonochromator: varimax optics / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.54 Å / Relative weight: 1
ReflectionResolution: 1.6→50 Å / Num. all: 24187 / Num. obs: 24187 / % possible obs: 75.4 % / Observed criterion σ(F): 0 / Observed criterion σ(I): -3 / Redundancy: 1.8 % / Rmerge(I) obs: 0.048 / Rsym value: 0.048 / Net I/σ(I): 13.1
Reflection shellResolution: 1.6→1.66 Å / Redundancy: 1.8 % / Rmerge(I) obs: 0.289 / Mean I/σ(I) obs: 3.6 / Rsym value: 0.289 / % possible all: 72.1

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Processing

Software
NameVersionClassificationNB
PHENIX1.8_1069refinement
PDB_EXTRACT3.11data extraction
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing
REFMACrefinement
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 2ILI

2ili


Resolution: 1.6→30.473 Å / Occupancy max: 1 / Occupancy min: 0 / SU ML: 0.15 / σ(F): 1.37 / Phase error: 19.83 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.1949 1232 5.1 %RANDOM
Rwork0.1518 ---
obs0.1539 24179 75.32 %-
all-24179 --
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL
Displacement parametersBiso max: 64.82 Å2 / Biso mean: 19.2151 Å2 / Biso min: 4.98 Å2
Refinement stepCycle: LAST / Resolution: 1.6→30.473 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2046 0 28 311 2385
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONf_bond_d0.007
X-RAY DIFFRACTIONf_angle_d1.144
X-RAY DIFFRACTIONf_dihedral_angle_d13.985
X-RAY DIFFRACTIONf_chiral_restr0.078
X-RAY DIFFRACTIONf_plane_restr0.005

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