Biosynthesis of Fatty Alcohols in Engineered Microbial Cell Factories: Advances and Limitations.

Concerns about climate change and environmental destruction have led to interest in technologies that can replace fossil fuels and petrochemicals with compounds derived from sustainable sources that have lower environmental impact. Fatty alcohols produced by chemical synthesis from ethylene or by chemical conversion of plant oils have a large range of industrial applications. These chemicals can be synthesized through biological routes but their free forms are produced in trace amounts naturally.

Lipomyces starkeyi: an emerging cell factory for production of lipids, oleochemicals and biotechnology applications.

Oils and oleochemicals produced by microbial cells offer an attractive alternative to petroleum and food-crop derived oils for the production of transport fuel and oleochemicals. An emerging candidate for industrial single cell oil production is the oleaginous yeast Lipomyces starkeyi. This yeast is capable of accumulating storage lipids to concentrations greater than 60% of the dry cell weight.

Optimization of C16 and C18 fatty alcohol production by an engineered strain of Lipomyces starkeyi.

The oleaginous yeast Lipomyces starkeyi was engineered for the production of long-chain fatty alcohols by expressing a fatty acyl-CoA reductase, mFAR1, from Mus musculus. The optimal conditions for production of fatty alcohols by this strain were investigated. Increased carbon-to-nitrogen ratios led to efficient C16 and C18 fatty alcohol production from glucose, xylose and glycerol.

Group II introns: versatile ribozymes and retroelements.

Group II introns are catalytic RNAs (ribozymes) and retroelements found in the genomes of bacteria, archaebacteria, and organelles of some eukaryotes. The prototypical retroelement form consists of a structurally conserved RNA and a multidomain reverse transcriptase protein, which interact with each other to mediate splicing and mobility reactions. A wealth of biochemical, cross-linking, and X-ray crystal structure studies have helped to reveal how the two components cooperate to carry out the splicing and mobility reactions.

Novel RNA structural features of an alternatively splicing group II intron from Clostridium tetani.

Group II introns are ribozymes in bacterial and organellar genomes that function as self-splicing introns and as retroelements. Previously, we reported that the group II intron C.te.

Alternative splicing of a group II intron in a surface layer protein gene in Clostridium tetani.

Group II introns are ribozymes and retroelements found in bacteria, and are thought to have been the ancestors of nuclear pre-mRNA introns. Whereas nuclear introns undergo prolific alternative splicing in some species, group II introns are not known to carry out equivalent reactions. Here we report a group II intron in the human pathogen Clostridium tetani, which undergoes four alternative splicing reactions in vivo.

Database for bacterial group II introns.

The Database for Bacterial Group II Introns (http://webapps2.ucalgary.ca/~groupii/index.

Group II introns in eubacteria and archaea: ORF-less introns and new varieties.

Group II introns are a major class of ribozymes found in bacteria, mitochondria, and plastids. Many introns contain reverse transcriptase open reading frames (ORFs) that confer mobility to the introns and allow them to persist as selfish DNAs. Here, we report an updated compilation of group II introns in Eubacteria and Archaea comprising 234 introns.