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- PDB-1ugb: HUMAN CARBONIC ANHYDRASE II[HCAII] (E.C.4.2.1.1) MUTANT WITH ALA ... -

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Basic information

Entry
Database: PDB / ID: 1ugb
TitleHUMAN CARBONIC ANHYDRASE II[HCAII] (E.C.4.2.1.1) MUTANT WITH ALA 65 REPLACED BY GLY (A65G)
ComponentsCARBONIC ANHYDRASE II
KeywordsLYASE (OXO-ACID) / ACETYLATION / ZINC / POLYMORPHISM / DISEASE MUTATION
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 / 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
AZIDE ION / Carbonic anhydrase 2
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / DIFFERENCE FOURIER / Resolution: 2 Å
AuthorsScolnick, L.R. / Christianson, D.W.
CitationJournal: Biochemistry / Year: 1996
Title: X-ray crystallographic studies of alanine-65 variants of carbonic anhydrase II reveal the structural basis of compromised proton transfer in catalysis.
Authors: Scolnick, L.R. / Christianson, D.W.
History
DepositionJul 24, 1996Processing site: BNL
Revision 1.0Jan 27, 1997Provider: repository / Type: Initial release
Revision 1.1Mar 24, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Nov 3, 2021Group: Database references / Derived calculations ...Database references / Derived calculations / Other / Refinement description
Category: database_2 / pdbx_database_status ...database_2 / pdbx_database_status / software / 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 / _software.name / _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 1.4Feb 14, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond
Revision 1.5Apr 3, 2024Group: Refinement description / Category: pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: CARBONIC ANHYDRASE II
hetero molecules


Theoretical massNumber of molelcules
Total (without water)29,1643
Polymers29,0571
Non-polymers1072
Water2,162120
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

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Components

#1: Protein CARBONIC ANHYDRASE II


Mass: 29056.758 Da / Num. of mol.: 1 / Mutation: A65G
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CAII / Plasmid: PCAM / Species (production host): Escherichia coli / Gene (production host): CAII / Production host: Escherichia coli BL21(DE3) (bacteria) / 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-AZI / AZIDE ION


Mass: 42.020 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: N3
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 120 / 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: 2.17 Å3/Da / Density % sol: 44 %
Crystal growpH: 8 / Details: pH 8.0
Crystal grow
*PLUS
Method: vapor diffusion, sitting drop
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetails
150 mMTris-HCl1drop
21.95-3.9 Mammonium sulfate1drop
350 mMTris-HCl1reservoir
41.95-3.9 Mammonium sulfate1reservoir
72 mMdithiothreitol1drop
5enzyme1drop
6methylmercury acetate1dropsaturated

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Data collection

DiffractionMean temperature: 293 K
Diffraction sourceWavelength: 1.5418
DetectorType: RIGAKU / Detector: IMAGE PLATE / Date: Dec 27, 1995
RadiationMonochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2→7.2 Å / Num. obs: 16603 / % possible obs: 96.7 % / Observed criterion σ(I): 2 / Redundancy: 2.4 % / Biso Wilson estimate: 12.6 Å2 / Rsym value: 0.092 / Net I/σ(I): 2
Reflection shellResolution: 2→2.05 Å / Redundancy: 2 % / Mean I/σ(I) obs: 2 / Rsym value: 0.26 / % possible all: 78.4
Reflection
*PLUS
Num. measured all: 39629 / Rmerge(I) obs: 0.092

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Processing

Software
NameVersionClassification
X-PLOR3.1model building
X-PLOR3.1refinement
MOSFLMdata reduction
CCP4(AGROVATAdata scaling
ROTAVATAdata scaling
X-PLOR3.1phasing
RefinementMethod to determine structure: DIFFERENCE FOURIER
Starting model: NATIVE CAII (HAKANSSON ET AL., 1992)

Resolution: 2→6.5 Å / Cross valid method: R-FREE / σ(F): 2
RfactorNum. reflection% reflection
Rfree0.235 1660 10 %
Rwork0.175 --
obs0.175 39629 96.7 %
Displacement parametersBiso mean: 15.1 Å2
Refine analyzeLuzzati d res low obs: 12 Å / Luzzati sigma a obs: 0.24 Å
Refinement stepCycle: LAST / Resolution: 2→6.5 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2056 0 2 120 2178
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_d25.2
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
LS refinement shellResolution: 1.95→2.04 Å
RfactorNum. reflection% reflection
Rfree0.32 80 10 %
Rwork0.26 571 -
obs--33.02 %
Software
*PLUS
Name: X-PLOR / Version: 3.1 / Classification: refinement
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_deg25.2
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_deg1.3

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