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- PDB-2nns: Structure of inhibitor binding to Carbonic Anhydrase II -

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Entry
Database: PDB / ID: 2nns
TitleStructure of inhibitor binding to Carbonic Anhydrase II
ComponentsCarbonic anhydrase 2
KeywordsLYASE / zinc metalloenzyme / sulfonamide
Function / homology
Function and homology information


positive regulation of dipeptide transmembrane transport / regulation of monoatomic anion transport / cyanamide hydratase / cyanamide hydratase activity / arylesterase activity / Reversible hydration of carbon dioxide / angiotensin-activated signaling pathway / Developmental Lineage of Pancreatic Ductal Cells / carbonic anhydrase / regulation of intracellular pH ...positive regulation of dipeptide transmembrane transport / regulation of monoatomic anion transport / cyanamide hydratase / cyanamide hydratase activity / arylesterase activity / Reversible hydration of carbon dioxide / angiotensin-activated signaling pathway / Developmental Lineage of Pancreatic Ductal Cells / carbonic anhydrase / regulation of intracellular pH / carbonate dehydratase activity / carbon dioxide transport / Erythrocytes take up oxygen and release carbon dioxide / Erythrocytes take up carbon dioxide and release oxygen / apical part of cell / 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
N-{2-[4-(AMINOSULFONYL)PHENYL]ETHYL}ACETAMIDE / METHYL MERCURY ION / Carbonic anhydrase 2
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.03 Å
AuthorsChristianson, D.W. / Jude, K.M.
CitationJournal: J.Am.Chem.Soc. / Year: 2007
Title: Structural Analysis of Charge Discrimination in the Binding of Inhibitors to Human Carbonic Anhydrases I and II.
Authors: Srivastava, D.K. / Jude, K.M. / Banerjee, A.L. / Haldar, M. / Manokaran, S. / Kooren, J. / Mallik, S. / Christianson, D.W.
History
DepositionOct 24, 2006Deposition site: RCSB / Processing site: RCSB
Revision 1.0May 8, 2007Provider: repository / Type: Initial release
Revision 1.1May 1, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Non-polymer description / Version format compliance
Revision 1.3Oct 18, 2017Group: Refinement description / Category: software
Revision 1.4Jul 24, 2019Group: Data collection / Derived calculations / Refinement description
Category: software / struct_conn
Item: _software.classification / _software.contact_author ..._software.classification / _software.contact_author / _software.contact_author_email / _software.location / _software.name / _software.type / _struct_conn.pdbx_leaving_atom_flag
Revision 1.5Aug 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 / pdbx_struct_conn_angle / struct_conn / 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 / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_alt_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr2_auth_comp_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_alt_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr2_label_atom_id / _pdbx_struct_conn_angle.ptnr2_label_comp_id / _pdbx_struct_conn_angle.ptnr2_label_seq_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_alt_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_ptnr1_label_alt_id / _struct_conn.pdbx_ptnr2_label_alt_id / _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_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.6Nov 6, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature
Revision 2.0Aug 12, 2026Group: Atomic model / Data collection ...Atomic model / Data collection / Derived calculations / Non-polymer description / Polymer sequence / Structure summary
Category: atom_site / atom_site_anisotrop ...atom_site / atom_site_anisotrop / chem_comp / chem_comp_atom / chem_comp_bond / entity / entity_poly / entity_poly_seq / pdbx_entity_nonpoly / pdbx_modification_feature / pdbx_nonpoly_atom_coordination / pdbx_nonpoly_atom_coordination_sphere / pdbx_nonpoly_atom_coordination_sphere_order / pdbx_nonpoly_scheme / pdbx_poly_seq_scheme / pdbx_struct_assembly_gen / pdbx_struct_conn_angle / pdbx_struct_mod_residue / struct_asym / struct_conn / struct_conn_type / struct_site / struct_site_gen
Item: _atom_site.B_iso_or_equiv / _atom_site.Cartn_x ..._atom_site.B_iso_or_equiv / _atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_atom_id / _atom_site.auth_comp_id / _atom_site.auth_seq_id / _atom_site.group_PDB / _atom_site.label_alt_id / _atom_site.label_asym_id / _atom_site.label_atom_id / _atom_site.label_comp_id / _atom_site.label_entity_id / _atom_site.label_seq_id / _atom_site.occupancy / _atom_site.type_symbol / _atom_site_anisotrop.U[1][1] / _atom_site_anisotrop.U[1][2] / _atom_site_anisotrop.U[1][3] / _atom_site_anisotrop.U[2][2] / _atom_site_anisotrop.U[2][3] / _atom_site_anisotrop.U[3][3] / _atom_site_anisotrop.pdbx_auth_atom_id / _atom_site_anisotrop.pdbx_auth_comp_id / _atom_site_anisotrop.pdbx_auth_seq_id / _atom_site_anisotrop.pdbx_label_alt_id / _atom_site_anisotrop.pdbx_label_asym_id / _atom_site_anisotrop.pdbx_label_atom_id / _atom_site_anisotrop.pdbx_label_comp_id / _atom_site_anisotrop.pdbx_label_seq_id / _atom_site_anisotrop.type_symbol / _chem_comp.formula / _chem_comp.formula_weight / _chem_comp.id / _chem_comp.mon_nstd_flag / _chem_comp.name / _chem_comp.type / _chem_comp_bond.atom_id_1 / _chem_comp_bond.atom_id_2 / _chem_comp_bond.comp_id / _chem_comp_bond.pdbx_aromatic_flag / _chem_comp_bond.value_order / _entity_poly.nstd_monomer / _entity_poly.pdbx_seq_one_letter_code / _entity_poly_seq.mon_id / _pdbx_poly_seq_scheme.mon_id / _pdbx_poly_seq_scheme.pdb_mon_id / _pdbx_struct_assembly_gen.asym_id_list / _struct_site.pdbx_num_residues
Description: Metalloprotein remediation / Provider: repository / Type: Remediation

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Carbonic anhydrase 2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)30,1827
Polymers29,2891
Non-polymers8936
Water6,557364
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)42.264, 41.338, 71.975
Angle α, β, γ (deg.)90.00, 104.50, 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: 29289.062 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CA2 / Species (production host): Escherichia coli / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3) / References: UniProt: P00918, carbonic anhydrase

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Non-polymers , 6 types, 370 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


Mass: 35.453 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Cl
#4: Chemical ChemComp-M25 / N-{2-[4-(AMINOSULFONYL)PHENYL]ETHYL}ACETAMIDE


Mass: 242.295 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C10H14N2O3S
#5: Chemical ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C3H8O3
#6: Chemical ChemComp-MMC / METHYL MERCURY ION


Mass: 215.625 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: CH3Hg
#7: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 364 / Source method: isolated from a natural source / Formula: H2O

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Details

Has protein modificationY

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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: 2.06 Å3/Da / Density % sol: 40.35 %
Crystal growTemperature: 277 K / Method: vapor diffusion / pH: 7.7
Details: (NH4)2SO4, Tris, pH 7.7, vapor diffusion, temperature 277K

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Data collection

Diffraction
IDMean temperature (K)Crystal-ID
11001
21
Diffraction source
SourceSiteBeamlineIDWavelength (Å)
SYNCHROTRONALS 5.0.211
2
DetectorType: ADSC QUANTUM 315 / Detector: CCD / Date: Nov 10, 2005
Radiation
IDMonochromatorProtocolScattering typeWavelength-ID
1Si(111)SINGLE WAVELENGTHx-ray1
2x-ray1
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 1.03→50 Å / Num. obs: 105952 / % possible obs: 89.7 % / Redundancy: 3 % / Biso Wilson estimate: 7.4 Å2 / Rmerge(I) obs: 0.061 / Χ2: 1.313 / Net I/σ(I): 9.4
Reflection shellResolution: 1.03→1.07 Å / Redundancy: 1.3 % / Rmerge(I) obs: 0.283 / Mean I/σ(I) obs: 2 / Num. unique all: 6635 / Χ2: 0.72 / % possible all: 56.9

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Processing

Software
NameVersionClassificationNB
SHELXL-97refinement
SCALEPACKdata scaling
CNSrefinement
PDB_EXTRACT2data extraction
Blu-Icedata collection
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing
DENZOdata reduction
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 2CBA

2cba


Resolution: 1.03→50 Å / Num. parameters: 22643 / Num. restraintsaints: 27573 / Cross valid method: FREE R / Stereochemistry target values: Engh & Huber
Details: Anisotropic refinement led to a drop in RFree of 0.0245. Addition of riding hydrogens led to a drop in RFree of 0.0132.
RfactorNum. reflection% reflectionSelection details
Rfree0.164 2111 2 %RANDOM
all0.129 ---
obs0.129 103824 87.7 %-
Solvent computationSolvent model: MOEWS & KRETSINGER, J.MOL.BIOL.91(1973)201-228
Displacement parametersBiso mean: 15.136 Å2
Refinement stepCycle: LAST / Resolution: 1.03→50 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2066 0 40 364 2470
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONs_bond_d0.014
X-RAY DIFFRACTIONs_angle_d0.032
X-RAY DIFFRACTIONs_similar_dist0
X-RAY DIFFRACTIONs_from_restr_planes0.031
X-RAY DIFFRACTIONs_zero_chiral_vol0.086
X-RAY DIFFRACTIONs_non_zero_chiral_vol0.093
X-RAY DIFFRACTIONs_anti_bump_dis_restr0.103
X-RAY DIFFRACTIONs_rigid_bond_adp_cmpnt0.005
X-RAY DIFFRACTIONs_similar_adp_cmpnt0.049
X-RAY DIFFRACTIONs_approx_iso_adps0.097
LS refinement shellResolution: 1.03→1.09 Å /
Num. reflection% reflection
Rfree222 -
obs9342 47.7 %

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