Here is some literature.

https://phys.org/news/2015-09-discovery-redox-switch-key-enzyme-involved.html

https://www.eurekalert.org/pub_releases/2014-03/nlmc-ssf032414.php

https://phys.org/news/2014-03-functional-chromosome-yeast.html

https://www.eurekalert.org/pub_releases/2010-08/uoic-sig081910.php

https://www.eurekalert.org/pub_releases/2010-03/sfgm-syt032410.php

https://phys.org/news/2016-10-super-yeast-power-economics-biofuels.html

http://www.sciencecodex.com/turning_bacteria_into_butanol_biofuel_factories

https://phys.org/news/2011-03-bacteria-butanol-biofuel-factories.html

https://www.technologyreview.com/s/423373/bug-creates-butanol-directly-from-cellulose/

http://www.nature.com/articles/nature11594.epdf

http://news.berkeley.edu/2012/11/07/discovery-resurrects-process-to-convert-sugar-directly-to-diesel/

https://www.chemistryworld.com/news/better-bugs-for-brewing-butanol/1015823.article

https://phys.org/news/2013-06-scottish-startup-whisky-dregs-biobutanol.html

http://www.sfgate.com/science/article/Biofuel-created-by-explosive-technology-4191168.php

https://www.eurekalert.org/pub_releases/2015-08/drnl-bcm081415.php

http://aem.asm.org/content/early/2011/03/04/AEM.02454-10.abstract?maxtoshow=&hits=10&RESULTFORMAT=&fulltext=james+liao&searchid=1&FIRSTINDEX=0&resourcetype=HWCIT

http://www.nature.com/nbt/journal/v29/n4/full/nbt.1789.html

Regads,

Joachim