5F2K

Crystal structure of mycobacterial fatty acid O-methyltransferase in complex with SAH and octanoate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Biochemical Studies of Mycobacterial Fatty Acid Methyltransferase: A Catalyst for the Enzymatic Production of Biodiesel.

Petronikolou, N.Nair, S.K.

(2015) Chem.Biol. 22: 1480-1490

  • DOI: 10.1016/j.chembiol.2015.09.011
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Transesterification of fatty acids yields the essential component of biodiesel, but current processes are cost-prohibitive and generate waste. Recent efforts make use of biocatalysts that are effective in diverting products from primary metabolism to ...

    Transesterification of fatty acids yields the essential component of biodiesel, but current processes are cost-prohibitive and generate waste. Recent efforts make use of biocatalysts that are effective in diverting products from primary metabolism to yield fatty acid methyl esters in bacteria. These biotransformations require the fatty acid O-methyltransferase (FAMT) from Mycobacterium marinum (MmFAMT). Although this activity was first reported in the literature in 1970, the FAMTs have yet to be biochemically characterized. Here, we describe several crystal structures of MmFAMT, which highlight an unexpected structural conservation with methyltransferases that are involved in plant natural product metabolism. The determinants for ligand recognition are analyzed by kinetic analysis of structure-based active-site variants. These studies reveal how an architectural fold employed in plant natural product biosynthesis is used in bacterial fatty acid O-methylation.


    Organizational Affiliation

    Department of Biochemistry, University of Illinois at Urbana Champaign, 600 South Mathews Avenue, Urbana, IL 61801, USA; Institute for Genomic Biology, University of Illinois at Urbana Champaign, 600 South Mathews Avenue, Urbana, IL 61801, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
fatty acid O-methyltransferase
A, B
368Mycobacterium marinum (strain ATCC BAA-535 / M)Mutation(s): 0 
Find proteins for B2HHT4 (Mycobacterium marinum (strain ATCC BAA-535 / M))
Go to UniProtKB:  B2HHT4
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SAH
Query on SAH

Download SDF File 
Download CCD File 
A, B
S-ADENOSYL-L-HOMOCYSTEINE
C14 H20 N6 O5 S
ZJUKTBDSGOFHSH-WFMPWKQPSA-N
 Ligand Interaction
OCA
Query on OCA

Download SDF File 
Download CCD File 
A, B
OCTANOIC ACID (CAPRYLIC ACID)
C8 H16 O2
WWZKQHOCKIZLMA-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.195 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 63.074α = 90.00
b = 66.131β = 107.36
c = 98.086γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
PHENIXmodel building
PHENIXphasing
REFMACrefinement
ARPmodel building
Cootmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-12-30
    Type: Initial release
  • Version 1.1: 2017-11-22
    Type: Derived calculations, Refinement description