5EQB

Crystal structure of lanosterol 14-alpha demethylase with intact transmembrane domain bound to itraconazole


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.19 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.193 

wwPDB Validation 3D Report Full Report



Literature

Architecture of a single membrane spanning cytochrome P450 suggests constraints that orient the catalytic domain relative to a bilayer.

Monk, B.C.Tomasiak, T.M.Keniya, M.V.Huschmann, F.U.Tyndall, J.D.O'Connell, J.D.Cannon, R.D.McDonald, J.G.Rodriguez, A.Finer-Moore, J.S.Stroud, R.M.

(2014) Proc Natl Acad Sci U S A 111: 3865-3870

  • DOI: 10.1073/pnas.1324245111
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Bitopic integral membrane proteins with a single transmembrane helix play diverse roles in catalysis, cell signaling, and morphogenesis. Complete monospanning protein structures are needed to show how interaction between the transmembrane helix and c ...

    Bitopic integral membrane proteins with a single transmembrane helix play diverse roles in catalysis, cell signaling, and morphogenesis. Complete monospanning protein structures are needed to show how interaction between the transmembrane helix and catalytic domain might influence association with the membrane and function. We report crystal structures of full-length Saccharomyces cerevisiae lanosterol 14α-demethylase, a membrane monospanning cytochrome P450 of the CYP51 family that catalyzes the first postcyclization step in ergosterol biosynthesis and is inhibited by triazole drugs. The structures reveal a well-ordered N-terminal amphipathic helix preceding a putative transmembrane helix that would constrain the catalytic domain orientation to lie partly in the lipid bilayer. The structures locate the substrate lanosterol, identify putative substrate and product channels, and reveal constrained interactions with triazole antifungal drugs that are important for drug design and understanding drug resistance.


    Organizational Affiliation

    Sir John Walsh Research Institute, Department of Oral Sciences, Faculty of Dentistry, and School of Pharmacy, University of Otago, Dunedin 9054, New Zealand.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Lanosterol 14-alpha demethylase
A
539Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: ERG11CYP51YHR007C
EC: 1.14.13.70 (PDB Primary Data), 1.14.14.154 (UniProt)
Membrane protein
Mpstruc
Group: 
MONOTOPIC MEMBRANE PROTEINS
Sub Group: 
Cytochromes P450
Protein: 
Lanosterol 14α-demethylase with bound lanosterol
Find proteins for P10614 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P10614
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
1YN
Query on 1YN

Download CCD File 
A
2-[(2R)-butan-2-yl]-4-{4-[4-(4-{[(2R,4S)-2-(2,4-dichlorophenyl)-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-4-yl]methoxy}phenyl)piperazin-1-yl]phenyl}-2,4-dihydro-3H-1,2,4-triazol-3-one
C35 H38 Cl2 N8 O4
VHVPQPYKVGDNFY-DFMJLFEVSA-N
 Ligand Interaction
HEM
Query on HEM

Download CCD File 
A
PROTOPORPHYRIN IX CONTAINING FE
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.19 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.193 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 79.63α = 90
b = 67.845β = 99.75
c = 80.705γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-01-13
    Type: Initial release