2IUF

The structures of Penicillium vitale catalase: resting state, oxidised state (compound I) and complex with aminotriazole


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.71 Å
  • R-Value Free: 0.154 
  • R-Value Work: 0.129 
  • R-Value Observed: 0.131 

wwPDB Validation 3D Report Full Report



Literature

The Structures and Electronic Configuration of Compound I Intermediates of Helicobacter Pylori and Penicillium Vitale Catalases Determined by X-Ray Crystallography and Qm/Mm Density Functional Theory Calculations.

Alfonso-Prieto, M.Borovik, A.Carpena, X.Murshudov, G.Melik-Adamyan, W.Fita, I.Rovira, C.Loewen, P.C.

(2007) J Am Chem Soc 129: 4193

  • DOI: 10.1021/ja063660y
  • Primary Citation of Related Structures:  
    2IQF, 2IUF

  • PubMed Abstract: 
  • The structures of Helicobacter pylori (HPC) and Penicillium vitale (PVC) catalases, each with two subunits in the crystal asymmetric unit, oxidized with peroxoacetic acid are reported at 1.8 and 1.7 A resolution, respectively. Despite the similar oxidation conditions employed, the iron-oxygen coordination length is 1 ...

    The structures of Helicobacter pylori (HPC) and Penicillium vitale (PVC) catalases, each with two subunits in the crystal asymmetric unit, oxidized with peroxoacetic acid are reported at 1.8 and 1.7 A resolution, respectively. Despite the similar oxidation conditions employed, the iron-oxygen coordination length is 1.72 A for PVC, close to what is expected for a Fe=O double bond, and 1.80 and 1.85 A for HPC, suggestive of a Fe-O single bond. The structure and electronic configuration of the oxoferryl heme and immediate protein environment is investigated further by QM/MM density functional theory calculations. Four different active site electronic configurations are considered, Por*+-FeIV=O, Por*+-FeIV=O...HisH+, Por*+-FeIV-OH+ and Por-FeIV-OH (a protein radical is assumed in the latter configuration). The electronic structure of the primary oxidized species, Por*+-FeIV=O, differs qualitatively between HPC and PVC with an A2u-like porphyrin radical delocalized on the porphyrin in HPC and a mixed A1u-like "fluctuating" radical partially delocalized over the essential distal histidine, the porphyrin, and, to a lesser extent, the proximal tyrosine residue. This difference is rationalized in terms of HPC containing heme b and PVC containing heme d. It is concluded that compound I of PVC contains an oxoferryl Por*+-FeIV=O species with partial protonation of the distal histidine and compound I of HPC contains a hydroxoferryl Por-FeIV-OH with the second oxidation equivalent delocalized as a protein radical. The findings support the idea that there is a relation between radical migration to the protein and protonation of the oxoferryl bond in catalase.


    Organizational Affiliation

    Centre especial de Recerca en Química Teorica, Parc Científic de Barcelona, Josep Samitier 1-5, 08028 Barcelona, Spain.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CATALASEAE688Penicillium janthinellumMutation(s): 0 
EC: 1.11.1.6
Find proteins for D9N167 (Penicillium janthinellum)
Explore D9N167 
Go to UniProtKB:  D9N167
Protein Feature View
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  • Reference Sequence
Oligosaccharides

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Entity ID: 2
MoleculeChainsChain Length2D Diagram Glycosylation
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-6)-2-acetamido-2-deoxy-beta-D-glucopyranose
B
2 N-Glycosylation
Small Molecules
Ligands 7 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HDD
Query on HDD

Download CCD File 
A, E
CIS-HEME D HYDROXYCHLORIN GAMMA-SPIROLACTONE
C34 H32 Fe N4 O5
UMGOPAWIGKFTRK-QQDQPIDJSA-N
 Ligand Interaction
NAG
Query on NAG

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A, E
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
MPD
Query on MPD

Download CCD File 
A
(4S)-2-METHYL-2,4-PENTANEDIOL
C6 H14 O2
SVTBMSDMJJWYQN-YFKPBYRVSA-N
 Ligand Interaction
F50
Query on F50

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A, E
ETHANEPEROXOIC ACID
C2 H4 O3
KFSLWBXXFJQRDL-UHFFFAOYSA-N
 Ligand Interaction
ACT
Query on ACT

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A, E
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
CA
Query on CA

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A, E
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
O
Query on O

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A, E
OXYGEN ATOM
O
XLYOFNOQVPJJNP-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MHO
Query on MHO
A,EL-PEPTIDE LINKINGC5 H11 N O3 SMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.71 Å
  • R-Value Free: 0.154 
  • R-Value Work: 0.129 
  • R-Value Observed: 0.131 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 142.44α = 90
b = 142.44β = 90
c = 132.23γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-07-10
    Type: Initial release
  • Version 1.1: 2016-12-28
    Changes: Database references, Derived calculations, Non-polymer description, Other, Structure summary, Version format compliance
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Other, Structure summary