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- PDB-1cnh: X-RAY CRYSTALLOGRAPHIC STUDIES OF ENGINEERED HYDROGEN BOND NETWOR... -

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Basic information

Entry
Database: PDB / ID: 1cnh
TitleX-RAY CRYSTALLOGRAPHIC STUDIES OF ENGINEERED HYDROGEN BOND NETWORKS IN A PROTEIN-ZINC BINDING SITE
ComponentsCARBONIC ANHYDRASE II
KeywordsLYASE (OXO-ACID)
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 activity / cyanamide hydratase / 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 activity / cyanamide hydratase / arylesterase activity / regulation of chloride transport / Reversible hydration of carbon dioxide / morphogenesis of an epithelium / angiotensin-activated signaling pathway / regulation of intracellular pH / positive regulation of synaptic transmission, GABAergic / 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 / cytoplasm / cytosol
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
Carbonic anhydrase 2
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / Resolution: 2.05 Å
AuthorsLesburg, C.A. / Christianson, D.W.
Citation
Journal: J.Am.Chem.Soc. / Year: 1995
Title: X-Ray Crystallographic Studies of Engineered Hydrogen Bond Networks in a Protein-Zinc Binding Site
Authors: Lesburg, C.A. / Christianson, D.W.
#1: Journal: To be Published
Title: Hydrogen Bond Network in the Metal Binding Site of Carbonic Anhydrase Enhances Zinc Affinity and Catalytic Efficiency
Authors: Kiefer, L.L. / Paterno, S.A. / Fierke, C.A.
History
DepositionApr 3, 1995Processing site: BNL
Revision 1.0Jul 10, 1995Provider: repository / Type: Initial release
Revision 1.1Mar 3, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Feb 7, 2024Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Other
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_database_status / 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_database_status.process_site / _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.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_atom_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

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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)29,2242
Polymers29,1591
Non-polymers651
Water3,027168
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)42.700, 41.700, 73.000
Angle α, β, γ (deg.)90.00, 104.60, 90.00
Int Tables number4
Space group name H-MP1211
Atom site foot note1: CIS PROLINE - PRO 30 / 2: CIS PROLINE - PRO 202

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Components

#1: Protein CARBONIC ANHYDRASE II


Mass: 29158.848 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CA2 / Plasmid: PCAM/Q92E / Gene (production host): CA2 / 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: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 168 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION

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Sample preparation

CrystalDensity Matthews: 2.16 Å3/Da / Density % sol: 42.94 %
Crystal grow
*PLUS
Temperature: 20 ℃ / pH: 8 / Method: vapor diffusion, sitting drop
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetails
150 mMTris-Cl1reservoiror Tris-SO4, pH8.0
250-70 %saturatedammonium sulfate1reservoir1.75-2.5M
30.3 mMprotein1drop
450 mMTris-Cl1dropor Tris-SO4, pH8.0

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Data collection

Diffraction sourceWavelength: 1.54
DetectorType: SIEMENS / Detector: AREA DETECTOR / Date: Oct 10, 1993
RadiationScattering type: x-ray
Radiation wavelengthWavelength: 1.54 Å / Relative weight: 1
ReflectionNum. obs: 15319 / % possible obs: 87 % / Observed criterion σ(I): 2 / Redundancy: 1.9 % / Rmerge(I) obs: 0.071
Reflection
*PLUS
Highest resolution: 2.05 Å / Lowest resolution: 8 Å / Num. measured all: 29234 / Rmerge(I) obs: 0.071

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Processing

Software
NameClassification
X-PLORmodel building
X-PLORrefinement
BUDDHAdata reduction
X-PLORphasing
RefinementResolution: 2.05→8 Å / σ(F): 2 /
RfactorNum. reflection
Rwork0.158 -
obs0.158 14543
Displacement parametersBiso mean: 15.2 Å2
Refinement stepCycle: LAST / Resolution: 2.05→8 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2048 0 1 168 2217
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.009
X-RAY DIFFRACTIONx_bond_d_na
X-RAY DIFFRACTIONx_bond_d_prot
X-RAY DIFFRACTIONx_angle_d
X-RAY DIFFRACTIONx_angle_d_na
X-RAY DIFFRACTIONx_angle_d_prot
X-RAY DIFFRACTIONx_angle_deg1.6
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d25.5
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d1.3
X-RAY DIFFRACTIONx_improper_angle_d_na
X-RAY DIFFRACTIONx_improper_angle_d_prot
X-RAY DIFFRACTIONx_mcbond_it
X-RAY DIFFRACTIONx_mcangle_it
X-RAY DIFFRACTIONx_scbond_it
X-RAY DIFFRACTIONx_scangle_it
Software
*PLUS
Name: X-PLOR / Classification: refinement
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_deg25.5
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_deg1.3

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