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- PDB-2xih: The structure of ascorbate peroxidase Compound III -

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Basic information

Entry
Database: PDB / ID: 2xih
TitleThe structure of ascorbate peroxidase Compound III
ComponentsASCORBATE PEROXIDASE
KeywordsOXIDOREDUCTASE / FERRYL ION / FERROUS HEME
Function / homology
Function and homology information


L-ascorbate peroxidase activity / NAD(P)H oxidase (H2O2-forming) / cellular response to oxidative stress / heme binding / cytoplasm
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 / : / OXYGEN MOLECULE / NAD(P)H oxidase
Similarity search - Component
Biological speciesGLYCINE MAX (soybean)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.65 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
DepositionJun 29, 2010Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jul 7, 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
Revision 1.6Sep 2, 2026Group: Derived calculations / Structure summary
Category: pdbx_entry_details / pdbx_modification_feature ...pdbx_entry_details / pdbx_modification_feature / pdbx_nonpoly_atom_coordination / pdbx_nonpoly_atom_coordination_sphere / pdbx_nonpoly_atom_coordination_sphere_order / pdbx_struct_conn_angle / struct_conn
Item: _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id ..._pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr2_label_atom_id
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: ASCORBATE PEROXIDASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)27,7405
Polymers26,9561
Non-polymers7844
Water8,629479
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)81.960, 81.960, 75.198
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number94
Space group name H-MP42212
Components on special symmetry positions
IDModelComponents
11A-2087-

HOH

21A-2147-

HOH

31A-2263-

HOH

41A-2468-

HOH

51A-2470-

HOH

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Components

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Protein , 1 types, 1 molecules A

#1: Protein ASCORBATE PEROXIDASE / CYTOSOLIC ASCORBATE PEROXIDASE 1 / CCP / APX / CYTOCHROME C PEROXIDASE


Mass: 26956.373 Da / Num. of mol.: 1 / Fragment: RESIDUES 2-250
Source method: isolated from a genetically manipulated source
Details: COMPOUND I FORMED BY PHOTOREDUCTION OF COMPOUND III
Source: (gene. exp.) GLYCINE MAX (soybean) / Production host: ESCHERICHIA COLI (E. coli) / Variant (production host): SG 13009 / References: UniProt: Q43758, L-ascorbate peroxidase

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Non-polymers , 5 types, 483 molecules

#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.: 1 / 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: Chemical ChemComp-OXY / OXYGEN MOLECULE


Mass: 31.999 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: O2
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 479 / 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: 3

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Sample preparation

CrystalDensity Matthews: 2.34 Å3/Da / Density % sol: 48 % / Description: NONE
Crystal growpH: 8.3 / Details: LISO4 2.25M, HEPES 0.1M, PH8.3

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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: 1.485→1.69 Å / Num. obs: 35606 / % possible obs: 99.7 % / Observed criterion σ(I): 0 / Redundancy: 3.6 % / Rmerge(I) obs: 0.07 / Net I/σ(I): 12.1
Reflection shellResolution: 1.485→1.524 Å / Redundancy: 2.6 % / Rmerge(I) obs: 0.42 / Mean I/σ(I) obs: 2.11 / % possible all: 99.2

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Processing

Software
NameVersionClassification
REFMAC5refinement
XDSdata reduction
XDSdata scaling
XDSphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1OAF

1oaf


Resolution: 1.65→35.99 Å / Cor.coef. Fo:Fc: 0.973 / Cor.coef. Fo:Fc free: 0.958 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.078 / ESU R Free: 0.083 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS.
RfactorNum. reflection% reflectionSelection details
Rfree0.20057 1934 5.2 %RANDOM
Rwork0.16148 ---
obs0.16352 35606 87.71 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: MASK
Displacement parametersBiso mean: 23.785 Å2
Baniso -1Baniso -2Baniso -3
1--0.02 Å2--
2---0.02 Å2-
3---0.05 Å2
Refinement stepCycle: LAST / Resolution: 1.65→35.99 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1905 0 51 479 2435
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0130.0222020
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg2.1772.0472753
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.265250
X-RAY DIFFRACTIONr_dihedral_angle_2_deg36.18424.0786
X-RAY DIFFRACTIONr_dihedral_angle_3_deg15.56615315
X-RAY DIFFRACTIONr_dihedral_angle_4_deg26.5751510
X-RAY DIFFRACTIONr_chiral_restr0.0640.2282
X-RAY DIFFRACTIONr_gen_planes_refined0.0060.0211572
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_it3.9711.51243
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it5.48521983
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it6.9553777
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it9.3044.5769
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: 1.65→1.69 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.326 142 -
Rwork0.297 2571 -
obs--87.23 %

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