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- PDB-2xj6: The structure of ferrous ascorbate peroxidase -

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Basic information

Entry
Database: PDB / ID: 2xj6
TitleThe structure of ferrous ascorbate peroxidase
ComponentsASCORBATE PEROXIDASE
KeywordsOXIDOREDUCTASE / FERRYL ION
Function / homology
Function and homology information


L-ascorbate peroxidase / L-ascorbate peroxidase activity / chloroplast / response to reactive oxygen species / hydrogen peroxide catabolic process / cellular response to oxidative stress / heme binding / metal ion binding
Similarity search - Function
Class I peroxidase / Heme-binding peroxidase Ccp1-like / Peroxidase; domain 2 / Peroxidase, domain 2 / Peroxidase; domain 1 - #10 / Peroxidase; domain 1 / Peroxidases heam-ligand binding site / Peroxidase, active site / Peroxidases active site signature. / Plant heme peroxidase family profile. ...Class I peroxidase / Heme-binding peroxidase Ccp1-like / Peroxidase; domain 2 / Peroxidase, domain 2 / Peroxidase; domain 1 - #10 / Peroxidase; domain 1 / Peroxidases heam-ligand binding site / Peroxidase, active site / Peroxidases active site signature. / Plant heme peroxidase family profile. / Haem peroxidase / Peroxidase / Peroxidases proximal heme-ligand signature. / Haem peroxidase superfamily / Orthogonal Bundle / Mainly Alpha
Similarity search - Domain/homology
PROTOPORPHYRIN IX CONTAINING FE / : / L-ascorbate peroxidase
Similarity search - Component
Biological speciesGLYCINE MAX (soybean)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.7 Å
AuthorsGumiero, A. / Raven, E.L. / Moody, P.C.E.
CitationJournal: J. Biol. Chem. / Year: 2011
Title: Nature of the ferryl heme in compounds I and II.
Authors: Gumiero, A. / Metcalfe, C.L. / Pearson, A.R. / Raven, E.L. / Moody, P.C.
History
DepositionJul 2, 2010Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jul 14, 2010Provider: repository / Type: Initial release
Revision 1.1May 8, 2011Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Feb 7, 2018Group: Database references / Category: citation / citation_author
Item: _citation.journal_abbrev / _citation.journal_id_ISSN ..._citation.journal_abbrev / _citation.journal_id_ISSN / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.title / _citation_author.name
Revision 1.4Apr 10, 2019Group: Data collection / Source and taxonomy / Category: entity_src_gen
Item: _entity_src_gen.pdbx_host_org_cell_line / _entity_src_gen.pdbx_host_org_variant
Revision 1.5Dec 20, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Other / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_database_status / pdbx_initial_refinement_model / pdbx_struct_conn_angle / struct_conn / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_database_status.status_code_sf / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_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.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_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.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_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: ASCORBATE PEROXIDASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)27,8045
Polymers26,9561
Non-polymers8484
Water6,053336
1
A: ASCORBATE PEROXIDASE
hetero molecules

A: ASCORBATE PEROXIDASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)55,60810
Polymers53,9132
Non-polymers1,6958
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation8_665-y+1,-x+1,-z1
Buried area3450 Å2
ΔGint-99.9 kcal/mol
Surface area20630 Å2
MethodPISA
Unit cell
Length a, b, c (Å)82.240, 82.240, 75.380
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number94
Space group name H-MP42212

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Components

#1: Protein ASCORBATE PEROXIDASE / FERROUS ASCORBATE PEROXIDASE / CYTOSOLIC ASCORBATE PEROXIDASE 1


Mass: 26956.373 Da / Num. of mol.: 1 / Fragment: RESIDUES 2-250
Source method: isolated from a genetically manipulated source
Details: FERROUS HEME APX OBTAINED BY PHOTOREDUCTION / Source: (gene. exp.) GLYCINE MAX (soybean) / Production host: ESCHERICHIA COLI (E. coli) / Variant (production host): SG 13009 / References: UniProt: Q43758, L-ascorbate peroxidase
#2: Chemical ChemComp-HEM / PROTOPORPHYRIN IX CONTAINING FE / HEME


Mass: 616.487 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C34H32FeN4O4
#3: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: SO4
#4: Chemical ChemComp-K / POTASSIUM ION


Mass: 39.098 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: K
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 336 / 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: 3

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Sample preparation

CrystalDensity Matthews: 2.36 Å3/Da / Density % sol: 48 % / Description: NONE
Crystal growpH: 8.3 / Details: LISO4 2.25 M HEPES 0.1 M PH 8.3

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: Diamond / Beamline: I04 / Wavelength: 0.6
DetectorType: ADSC CCD / Detector: CCD / Date: Feb 4, 2010
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.6 Å / Relative weight: 1
ReflectionResolution: 1.7→36.78 Å / Num. obs: 27116 / % possible obs: 94.5 % / Observed criterion σ(I): 0 / Redundancy: 3.7 % / Rmerge(I) obs: 0.11 / Net I/σ(I): 9.1
Reflection shellResolution: 1.7→1.79 Å / Redundancy: 3.7 % / Rmerge(I) obs: 0.56 / Mean I/σ(I) obs: 2.4 / % possible all: 96.3

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Processing

Software
NameVersionClassification
REFMAC5.5.0109refinement
XDSdata reduction
XDSdata scaling
CCP4phasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1OAF

1oaf


Resolution: 1.7→36.78 Å / Cor.coef. Fo:Fc: 0.959 / Cor.coef. Fo:Fc free: 0.916 / Cross valid method: THROUGHOUT / ESU R: 0.112 / ESU R Free: 0.119 / Stereochemistry target values: MAXIMUM LIKELIHOOD
Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. U VALUES REFINED INDIVIDUALLY.
RfactorNum. reflection% reflectionSelection details
Rfree0.22545 1395 5.1 %RANDOM
Rwork0.16973 ---
obs0.17252 25721 93.34 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: MASK
Displacement parametersBiso mean: 18.795 Å2
Baniso -1Baniso -2Baniso -3
1-0.01 Å20 Å20 Å2
2--0.01 Å20 Å2
3----0.03 Å2
Refinement stepCycle: LAST / Resolution: 1.7→36.78 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1903 0 54 336 2293
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.010.0222012
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg2.0342.0482743
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.0045248
X-RAY DIFFRACTIONr_dihedral_angle_2_deg37.59324.23585
X-RAY DIFFRACTIONr_dihedral_angle_3_deg15.69515312
X-RAY DIFFRACTIONr_dihedral_angle_4_deg26.193159
X-RAY DIFFRACTIONr_chiral_restr0.0470.2281
X-RAY DIFFRACTIONr_gen_planes_refined0.0050.0211559
X-RAY DIFFRACTIONr_gen_planes_other
X-RAY DIFFRACTIONr_nbd_refined
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it4.0281.51238
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it5.3521974
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it6.6733774
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it9.5484.5769
X-RAY DIFFRACTIONr_scangle_other
X-RAY DIFFRACTIONr_long_range_B_refined
X-RAY DIFFRACTIONr_long_range_B_other
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 1.7→1.744 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.31 112 -
Rwork0.278 1909 -
obs--95.87 %

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