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- PDB-2y6b: Ascorbate Peroxidase R38K mutant -

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Basic information

Entry
Database: PDB / ID: 2y6b
TitleAscorbate Peroxidase R38K mutant
ComponentsASCORBATE PEROXIDASE
KeywordsOXIDOREDUCTASE / HEME PEROXIDASE / PEROXIDE SCAVENGER
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 / MOLECULAR REPLACEMENT / Resolution: 1.9 Å
AuthorsMetcalfe, C.L. / Efimov, I. / Gumiero, A. / Raven, E.L. / Moody, P.C.E.
CitationJournal: J.Am.Chem.Soc. / Year: 2011
Title: Proton Delivery to Ferryl Heme in a Heme Peroxidase: Enzymatic Use of the Grotthuss Mechanism.
Authors: Efimov, I. / Badyal, S.K. / Metcalfe, C.L. / Macdonald, I. / Gumiero, A. / Raven, E.L. / Moody, P.C.E.
History
DepositionJan 20, 2011Deposition site: PDBE / Processing site: PDBE
Revision 1.0Oct 12, 2011Provider: repository / Type: Initial release
Revision 1.1Jul 5, 2017Group: Data collection / Category: diffrn_source / Item: _diffrn_source.type
Revision 1.2Dec 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 / 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 / _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)27,6413
Polymers26,9281
Non-polymers7132
Water2,432135
1
A: ASCORBATE PEROXIDASE
hetero molecules

A: ASCORBATE PEROXIDASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)55,2826
Polymers53,8572
Non-polymers1,4254
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation8_665-y+1,-x+1,-z1
Buried area3120 Å2
ΔGint-76.3 kcal/mol
Surface area20580 Å2
MethodPISA
Unit cell
Length a, b, c (Å)82.707, 82.707, 75.026
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-2045-

HOH

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Components

#1: Protein ASCORBATE PEROXIDASE / CYTOSOLIC ASCORBATE PEROXIDASE 1


Mass: 26928.357 Da / Num. of mol.: 1 / Fragment: RESIDUES 2-250 / Mutation: YES
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) GLYCINE MAX (soybean) / Plasmid: PAPX4 / Production host: ESCHERICHIA COLI (E. coli) / Strain (production host): SG13009 / 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.: 1 / Source method: obtained synthetically / Formula: SO4
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 135 / Source method: isolated from a natural source / Formula: H2O
Compound detailsENGINEERED RESIDUE IN CHAIN A, ARG 38 TO LYS

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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: 2.4 Å3/Da / Density % sol: 48 % / Description: NONE

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RUH2R / Wavelength: 1.5418
DetectorType: RIGAKU IMAGE PLATE / Detector: IMAGE PLATE / Date: Nov 30, 2007 / Details: MULTILAYER
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 1.9→27.2 Å / Num. obs: 20947 / % possible obs: 99.9 % / Observed criterion σ(I): 0 / Redundancy: 3.4 % / Rmerge(I) obs: 0.04 / Net I/σ(I): 17.8
Reflection shellResolution: 1.9→2 Å / Redundancy: 3.4 % / Rmerge(I) obs: 0.22 / Mean I/σ(I) obs: 3.6 / % possible all: 99.7

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Processing

Software
NameVersionClassification
REFMAC5.5.0102refinement
iMOSFLMdata reduction
SCALAdata scaling
REFMACphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1OAG

1oag


Resolution: 1.9→27.2 Å / Cor.coef. Fo:Fc: 0.952 / Cor.coef. Fo:Fc free: 0.92 / SU B: 7.071 / SU ML: 0.095 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.478 / ESU R Free: 0.151 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS.
RfactorNum. reflection% reflectionSelection details
Rfree0.24074 1077 5.2 %RANDOM
Rwork0.17517 ---
obs0.17838 20947 99.9 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 19.283 Å2
Baniso -1Baniso -2Baniso -3
1--0.01 Å20 Å20 Å2
2---0.01 Å20 Å2
3---0.02 Å2
Refinement stepCycle: LAST / Resolution: 1.9→27.2 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1899 0 48 135 2082
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0160.0222010
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg6.25250
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.25250
X-RAY DIFFRACTIONr_dihedral_angle_2_deg35.63124.40584
X-RAY DIFFRACTIONr_dihedral_angle_3_deg12.76815312
X-RAY DIFFRACTIONr_dihedral_angle_4_deg18.706158
X-RAY DIFFRACTIONr_chiral_restr0.0910.2282
X-RAY DIFFRACTIONr_gen_planes_refined
X-RAY DIFFRACTIONr_gen_planes_other
X-RAY DIFFRACTIONr_nbd_refined0.2050.21012
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined
X-RAY DIFFRACTIONr_nbtor_other0.30.21362
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.1210.2139
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_it1.2581.51277
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it1.79221982
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it3.1843837
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it4.3594.5757
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: 1.9→1.949 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.332 87 -
Rwork0.215 1406 -
obs--99.67 %

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