4J6D

The 2.4 A crystal structure of CYP154C5 from Nocardia farcinica in complex with testosterone


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.184 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Enzyme-substrate complex structures of CYP154C5 shed light on its mode of highly selective steroid hydroxylation.

Herzog, K.Bracco, P.Onoda, A.Hayashi, T.Hoffmann, K.Schallmey, A.

(2014) Acta Crystallogr D Biol Crystallogr 70: 2875-2889

  • DOI: https://doi.org/10.1107/S1399004714019129
  • Primary Citation of Related Structures:  
    4J6B, 4J6C, 4J6D, 4JBT

  • PubMed Abstract: 

    CYP154C5 from Nocardia farcinica is a bacterial cytochrome P450 monooxygenase active on steroid molecules. The enzyme has recently been shown to exhibit exclusive regioselectivity and stereoselectivity in the conversion of various pregnans and androstans, yielding 16α-hydroxylated steroid products. This makes the enzyme an attractive candidate for industrial application in steroid hormone synthesis. Here, crystal structures of CYP154C5 in complex with four different steroid molecules were solved at resolutions of up to 1.9 Å. These are the first reported P450 structures from the CYP154 family in complex with a substrate. The active site of CYP154C5 forms a flattened hydrophobic channel with two opposing polar regions, perfectly resembling the size and polarity distribution of the steroids and thus resulting in highly specific steroid binding with Kd values in the range 10-100 nM. Key enzyme-substrate interactions were identified that accounted for the exclusive regioselectivity and stereoselectivity of the enzyme. Additionally, comparison of the four CYP154C5-steroid structures revealed distinct structural differences, explaining the observed variations in kinetic data obtained for this P450 with the steroids pregnenolone, dehydroepiandrosterone, progesterone, androstenedione, testosterone and nandrolone. This will facilitate the generation of variants with improved activity or altered selectivity in the future by means of protein engineering.


  • Organizational Affiliation

    Junior Professorship for Biocatalysis, Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074 Aachen, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome P450 monooxygenase
A, B
410Nocardia farcinica IFM 10152Mutation(s): 0 
Gene Names: NFA_53110
UniProt
Find proteins for Q5YNS8 (Nocardia farcinica (strain IFM 10152))
Explore Q5YNS8 
Go to UniProtKB:  Q5YNS8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5YNS8
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM

Download Ideal Coordinates CCD File 
C [auth A],
I [auth B]
PROTOPORPHYRIN IX CONTAINING FE
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
TES
Query on TES

Download Ideal Coordinates CCD File 
E [auth A],
J [auth B]
TESTOSTERONE
C19 H28 O2
MUMGGOZAMZWBJJ-DYKIIFRCSA-N
FMT
Query on FMT

Download Ideal Coordinates CCD File 
F [auth A],
H [auth A],
L [auth B],
N [auth B]
FORMIC ACID
C H2 O2
BDAGIHXWWSANSR-UHFFFAOYSA-N
K
Query on K

Download Ideal Coordinates CCD File 
G [auth A],
M [auth B]
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
MG
Query on MG

Download Ideal Coordinates CCD File 
D [auth A],
K [auth B]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.184 
  • Space Group: H 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 102.99α = 90
b = 102.99β = 90
c = 218.42γ = 120
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
MOLREPphasing
REFMACrefinement
PDB_EXTRACTdata extraction
MAR345dtbdata collection

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-03-05
    Type: Initial release
  • Version 1.1: 2014-11-12
    Changes: Database references
  • Version 1.2: 2023-09-20
    Changes: Data collection, Database references, Derived calculations, Refinement description