4WG2

P411BM3-CIS T438S I263F regioselective C-H amination catalyst


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.66 Å
  • R-Value Free: 
    0.235 (Depositor), 0.230 (DCC) 
  • R-Value Work: 
    0.197 (Depositor), 0.200 (DCC) 
  • R-Value Observed: 
    0.199 (Depositor) 

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Ligand Structure Quality Assessment 

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This is version 1.3 of the entry. See complete history


Literature

Enzyme-controlled nitrogen-atom transfer enables regiodivergent C-h amination.

Hyster, T.K.Farwell, C.C.Buller, A.R.McIntosh, J.A.Arnold, F.H.

(2014) J Am Chem Soc 136: 15505-15508

  • DOI: https://doi.org/10.1021/ja509308v
  • Primary Citation of Related Structures:  
    4WG2

  • PubMed Abstract: 

    We recently demonstrated that variants of cytochrome P450BM3 (CYP102A1) catalyze the insertion of nitrogen species into benzylic C-H bonds to form new C-N bonds. An outstanding challenge in the field of C-H amination is catalyst-controlled regioselectivity. Here, we report two engineered variants of P450BM3 that provide divergent regioselectivity for C-H amination-one favoring amination of benzylic C-H bonds and the other favoring homo-benzylic C-H bonds. The two variants provide nearly identical kinetic isotope effect values (2.8-3.0), suggesting that C-H abstraction is rate-limiting. The 2.66-Å crystal structure of the most active enzyme suggests that the engineered active site can preorganize the substrate for reactivity. We hypothesize that the enzyme controls regioselectivity through localization of a single C-H bond close to the iron nitrenoid.


  • Organizational Affiliation

    Division of Chemistry and Chemical Engineering 210-41, California Institute of Technology , 1200 East California Boulevard, Pasadena, California 91125, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Bifunctional P-450/NADPH-P450 reductase
A, B, C
469Priestia megateriumMutation(s): 16 
Gene Names: cyp102A1cyp102
EC: 1.14.14.1 (PDB Primary Data), 1.6.2.4 (PDB Primary Data)
UniProt
Find proteins for P14779 (Priestia megaterium (strain ATCC 14581 / DSM 32 / CCUG 1817 / JCM 2506 / NBRC 15308 / NCIMB 9376 / NCTC 10342 / NRRL B-14308 / VKM B-512 / Ford 19))
Explore P14779 
Go to UniProtKB:  P14779
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP14779
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.66 Å
  • R-Value Free:  0.235 (Depositor), 0.230 (DCC) 
  • R-Value Work:  0.197 (Depositor), 0.200 (DCC) 
  • R-Value Observed: 0.199 (Depositor) 
Space Group: P 42 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 206.897α = 90
b = 206.897β = 90
c = 119.385γ = 90
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

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Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted HEMClick on this verticalbar to view details

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-11-05
    Type: Initial release
  • Version 1.1: 2014-11-19
    Changes: Database references
  • Version 1.2: 2017-08-23
    Changes: Data collection, Database references, Derived calculations, Other, Source and taxonomy, Structure summary
  • Version 1.3: 2023-12-27
    Changes: Data collection, Database references