5F2K

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.196 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


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:  
    5F2K, 5F2N, 5F2O

  • 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 yield fatty acid methyl esters in bacteria ...

    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; Center for Biophysics and Computational Biology and University of Illinois at Urbana Champaign, 600 South Mathews Avenue, Roger Adams Lab Room 430, Urbana, IL 61801, USA; Institute for Genomic Biology, University of Illinois at Urbana Champaign, 600 South Mathews Avenue, Urbana, IL 61801, USA. Electronic address: snair@illinois.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
fatty acid O-methyltransferaseA, B368Mycobacterium marinum MMutation(s): 0 
Gene Names: MMAR_3356
UniProt
Find proteins for B2HHT4 (Mycobacterium marinum (strain ATCC BAA-535 / M))
Explore B2HHT4 
Go to UniProtKB:  B2HHT4
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SAH (Subject of Investigation/LOI)
Query on SAH

Download Ideal Coordinates CCD File 
C [auth A], E [auth B]S-ADENOSYL-L-HOMOCYSTEINE
C14 H20 N6 O5 S
ZJUKTBDSGOFHSH-WFMPWKQPSA-N
 Ligand Interaction
OCA
Query on OCA

Download Ideal Coordinates CCD File 
D [auth A], F [auth B]OCTANOIC ACID (CAPRYLIC ACID)
C8 H16 O2
WWZKQHOCKIZLMA-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.196 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.074α = 90
b = 66.131β = 107.36
c = 98.086γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data scaling
PHENIXmodel building
ARPmodel building
Cootmodel building
PHENIXphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

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