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- PDB-2aqt: CU/ZN superoxide dismutase from neisseria meningitidis K91Q, K94Q... -

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Basic information

Entry
Database: PDB / ID: 2aqt
TitleCU/ZN superoxide dismutase from neisseria meningitidis K91Q, K94Q double mutant
ComponentsSuperoxide dismutase [Cu-Zn]
KeywordsOXIDOREDUCTASE / cu/zn superoxide dismutase / electrostatic guidance / neisseria meningitidis
Function / homology
Function and homology information


superoxide dismutase / superoxide dismutase activity / removal of superoxide radicals / periplasmic space / copper ion binding
Similarity search - Function
Superoxide dismutase, copper/zinc binding domain / Copper/Zinc superoxide dismutase signature 1. / Superoxide dismutase, copper/zinc, binding site / Copper/Zinc superoxide dismutase signature 2. / Superoxide dismutase, copper/zinc binding domain / Copper/zinc superoxide dismutase (SODC) / Superoxide dismutase (Cu/Zn) / superoxide dismutase copper chaperone / Superoxide dismutase-like, copper/zinc binding domain superfamily / Immunoglobulin-like / Sandwich / Mainly Beta
Similarity search - Domain/homology
COPPER (II) ION / COPPER (I) ION / Superoxide dismutase [Cu-Zn] / Superoxide dismutase [Cu-Zn]
Similarity search - Component
Biological speciesNeisseria meningitidis (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.8 Å
AuthorsDiDonato, M. / Kassmann, C.J. / Bruns, C.K. / Cabelli, D.E. / Cao, Z. / Tabatabai, L.B. / Kroll, J.S. / Getzoff, E.D.
CitationJournal: To be Published
Title: CU/ZN superoxide dismutase from neisseria meningitidis K91Q, K94Q double mutant
Authors: DiDonato, M. / Kassmann, C.J. / Bruns, C.K. / Cabelli, D.E. / Cao, Z. / Tabatabai, L.B. / Kroll, J.S. / Getzoff, E.D.
History
DepositionAug 18, 2005Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 31, 2006Provider: repository / Type: Initial release
Revision 1.1Apr 30, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Oct 20, 2021Group: Database references / Derived calculations
Category: database_2 / pdbx_struct_conn_angle ...database_2 / 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_asym_id / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_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.ptnr1_symmetry / _pdbx_struct_conn_angle.ptnr2_auth_asym_id / _pdbx_struct_conn_angle.ptnr2_auth_comp_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_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.ptnr3_auth_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_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.ptnr3_symmetry / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_asym_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.ptnr1_symmetry / _struct_conn.ptnr2_auth_asym_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_conn.ptnr2_symmetry / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.4Apr 3, 2024Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model
Revision 1.5Oct 16, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
C: Superoxide dismutase [Cu-Zn]
B: Superoxide dismutase [Cu-Zn]
A: Superoxide dismutase [Cu-Zn]
hetero molecules


Theoretical massNumber of molelcules
Total (without water)52,76612
Polymers52,1563
Non-polymers6109
Water6,485360
1
B: Superoxide dismutase [Cu-Zn]
A: Superoxide dismutase [Cu-Zn]
hetero molecules


Theoretical massNumber of molelcules
Total (without water)35,1888
Polymers34,7712
Non-polymers4186
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area2070 Å2
ΔGint-29 kcal/mol
Surface area13820 Å2
MethodPISA
2
C: Superoxide dismutase [Cu-Zn]
hetero molecules

C: Superoxide dismutase [Cu-Zn]
hetero molecules


Theoretical massNumber of molelcules
Total (without water)35,1568
Polymers34,7712
Non-polymers3856
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_655-x+1,y,-z1
3
C: Superoxide dismutase [Cu-Zn]
B: Superoxide dismutase [Cu-Zn]
A: Superoxide dismutase [Cu-Zn]
hetero molecules

C: Superoxide dismutase [Cu-Zn]
B: Superoxide dismutase [Cu-Zn]
A: Superoxide dismutase [Cu-Zn]
hetero molecules


Theoretical massNumber of molelcules
Total (without water)105,53224
Polymers104,3126
Non-polymers1,22018
Water1086
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_655-x+1,y,-z1
Buried area11880 Å2
ΔGint-128 kcal/mol
Surface area35620 Å2
MethodPISA
Unit cell
Length a, b, c (Å)98.209, 64.464, 85.051
Angle α, β, γ (deg.)90.00, 128.33, 90.00
Int Tables number5
Space group name H-MC121
Components on special symmetry positions
IDModelComponents
11C-301-

CU

21B-750-

HOH

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Components

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Protein , 1 types, 3 molecules CBA

#1: Protein Superoxide dismutase [Cu-Zn]


Mass: 17385.268 Da / Num. of mol.: 3 / Mutation: K91Q, K94Q
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Neisseria meningitidis (bacteria) / Gene: sodC / Production host: Escherichia coli (E. coli)
References: UniProt: Q59623, UniProt: P57005*PLUS, superoxide dismutase

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Non-polymers , 5 types, 369 molecules

#2: Chemical ChemComp-CU1 / COPPER (I) ION


Mass: 63.546 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Cu
#3: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Zn
#4: Chemical ChemComp-CU / COPPER (II) ION


Mass: 63.546 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Cu
#5: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: SO4
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 360 / 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: 2.17 Å3/Da / Density % sol: 39.4 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 6
Details: AmSO4, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K

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Data collection

DiffractionMean temperature: 96 K
Diffraction sourceSource: SYNCHROTRON / Site: SSRL / Beamline: BL9-1 / Wavelength: 0.95 Å
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Mar 4, 2002
RadiationMonochromator: GRAPHITE / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.95 Å / Relative weight: 1
ReflectionResolution: 1.8→67 Å / Num. all: 38514 / Num. obs: 38514 / % possible obs: 99.5 % / Redundancy: 2.9 % / Biso Wilson estimate: 16.5 Å2 / Rsym value: 0.055 / Net I/σ(I): 11.1
Reflection shellResolution: 1.8→1.9 Å / Redundancy: 2.9 % / Mean I/σ(I) obs: 2 / Num. unique all: 4141 / Rsym value: 0.346 / % possible all: 99.5

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Processing

Software
NameVersionClassification
CNS1.1refinement
MOSFLMdata reduction
CCP4(SCALA)data scaling
AMoREphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: wild-type

Resolution: 1.8→49.44 Å / Rfactor Rfree error: 0.003 / Data cutoff high absF: 1389033.08 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.215 3855 10 %RANDOM
Rwork0.185 ---
all0.185 38514 --
obs0.185 38506 99.3 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 51.1226 Å2 / ksol: 0.390888 e/Å3
Displacement parametersBiso mean: 24.2 Å2
Baniso -1Baniso -2Baniso -3
1-2.46 Å20 Å22.3 Å2
2---0.18 Å20 Å2
3----2.28 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.23 Å0.19 Å
Luzzati d res low-5 Å
Luzzati sigma a0.21 Å0.17 Å
Refinement stepCycle: LAST / Resolution: 1.8→49.44 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3456 0 13 360 3829
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.004
X-RAY DIFFRACTIONc_bond_d_na
X-RAY DIFFRACTIONc_bond_d_prot
X-RAY DIFFRACTIONc_angle_d
X-RAY DIFFRACTIONc_angle_d_na
X-RAY DIFFRACTIONc_angle_d_prot
X-RAY DIFFRACTIONc_angle_deg1.4
X-RAY DIFFRACTIONc_angle_deg_na
X-RAY DIFFRACTIONc_angle_deg_prot
X-RAY DIFFRACTIONc_dihedral_angle_d25.9
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d0.84
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it1.251.5
X-RAY DIFFRACTIONc_mcangle_it1.912
X-RAY DIFFRACTIONc_scbond_it1.932
X-RAY DIFFRACTIONc_scangle_it2.832.5
LS refinement shellResolution: 1.8→1.86 Å / Rfactor Rfree error: 0.015 / Total num. of bins used: 10
RfactorNum. reflection% reflection
Rfree0.289 368 9.6 %
Rwork0.264 3472 -
obs--99.9 %

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