5F2K

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

(2015) Chem Biol 22: 1480-1490

• PubMed: 26526103 Search on PubMed
• DOI: https://doi.org/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. 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.

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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.