4DXY

Crystal structures of CYP101D2 Y96A mutant


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.207 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Improving the affinity and activity of CYP101D2 for hydrophobic substrates

Bell, S.G.Yang, W.Dale, A.Zhou, W.Wong, L.-L.

(2012) Appl Microbiol Biotechnol 

  • DOI: https://doi.org/10.1007/s00253-012-4278-7
  • Primary Citation of Related Structures:  
    4DXY

  • PubMed Abstract: 

    CYP101D2 is a cytochrome P450 monooxygenase from Novosphingobium aromaticivorans which is closely related to CYP101A1 (P450cam) from Pseudomonas putida. Both enzymes selectively hydroxylate camphor to 5-exo-hydroxycamphor, and the residues that line the active sites of both enzymes are similar including the pre-eminent Tyr96 residue. However, Met98 and Leu253 in CYP101D2 replace Phe98 and Val247 in CYP101A1, and camphor binding only results in a maximal change in the spin state to 40 % high-spin. Substitutions at Tyr96, Met98 and Leu253 in CYP101D2 reduced both the spin state shift on camphor binding and the camphor oxidation activity. The Tyr96Ala mutant increased the affinity of CYP101D2 for hydrocarbon substrates including adamantane, cyclooctane, hexane and 2-methylpentane. The monooxygenase activity of the Tyr96Ala variant towards alkane substrates was also enhanced compared with the wild-type enzyme. The crystal structure of the substrate-free form of this variant shows the enzyme in an open conformation (PDB: 4DXY), similar to that observed with the wild-type enzyme (PDB: 3NV5), with the side chain of Ala96 pointing away from the heme. Despite this, the binding and activity data suggest that this residue plays an important role in substrate binding, evidencing that the enzyme probably undergoes catalysis in a more closed conformation, similar to those observed in the crystal structures of CYP101A1 (PDB: 2CPP) and CYP101D1 (PDB: 3LXI).


  • Organizational Affiliation

    Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK. stephen.bell@adelaide.edu.au


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome P450417Novosphingobium aromaticivorans DSM 12444Mutation(s): 1 
Gene Names: Saro_1478
UniProt
Find proteins for Q2G8A2 (Novosphingobium aromaticivorans (strain ATCC 700278 / DSM 12444 / CCUG 56034 / CIP 105152 / NBRC 16084 / F199))
Explore Q2G8A2 
Go to UniProtKB:  Q2G8A2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ2G8A2
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.207 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 86.896α = 90
b = 86.896β = 90
c = 124.828γ = 120
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-08-15
    Type: Initial release
  • Version 1.1: 2023-11-08
    Changes: Data collection, Database references, Derived calculations, Refinement description