Abstract
The R-specific alcohol dehydrogenase (ADH) from Lactobacillus brevis LB19 (LbADH) was studied with respect to its ability to reduce a series of 3- through 5-carbon 2-alkanones and aldehydes of relevance as biofuel precursors. Although active on all substrates tested, LbADH displays a marked preference for longer chain substrates. Interestingly, however, 2-alkanones were found to impose substrate inhibition towards LbADH, whereas aldehyde substrates rendered no such effect. Inhibition caused by 2-alkanones was furthermore found to intensify with increasing chain length. Despite demonstrating both primary and secondary ADH activities, a preliminary sequence analysis suggests that LbADH remains distinct from other, previously characterized primary-secondary ADHs. In addition to further characterizing the substrate range of this industrially important enzyme, this study suggests that LbADH has the potential to serve as a useful enzyme for the engineering of various novel alcohol biofuel pathways.
Original language | English (US) |
---|---|
Pages (from-to) | 24-37 |
Number of pages | 14 |
Journal | Fermentation |
Volume | 1 |
Issue number | 1 |
DOIs | |
State | Published - Dec 2015 |
Keywords
- Alcohol dehydrogenase
- Biofuel
- Butanol
- Lactobacillus brevis
ASJC Scopus subject areas
- Food Science
- Biochemistry, Genetics and Molecular Biology (miscellaneous)
- Plant Science