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Team:British Columbia/Data
From 2011.igem.org
Contents |
Our System
Data for our Favourite New Parts
Main Page - GAL galactose-inducible yeast promoter, BBa_K517000: Promoter can be induced when exposed to galactose in the absence of glucose. Main Page - GPD constitutive yeast promoter, BBa_K517001: Promoter for constitutively high expression. Main Page - ERG20, BBa_K517002: An essential gene in yeast encoding an enzyme of the mevalonate pathway that produces FPP and GPP from I-PP and DMA-PP. Our iGEM team would like to produce more GPP than FPP because GPP is a precursor in producing monoterpenes where as FPP produces diterpenoids instead. The iGEM team aims to characterize this gene in vivo in S. cerevisiae yeast. The products will be sent for GC-MS. '''Reference: Ignea C., Cvetkovic I., Loupassaki S., Kefalas P., Johnson C. B, Kampranis S. C, Makris A. M. Improving yeast strains using recyclable integration cassettes, for the production of plant terpenoids. 2011 10:4''' '''Reference: Norihiko Misawa. Pathway engineering for functional isoprenoids. 2011.01.002 22:1-7''' Main Page - erg20_2, BBa_K517003: A mutant of the ERG20 gene; K197E substitution. The encoded mutant protein produces 25% FPP and 75% GPP instead of 75% FPP and 25% GPP compared to the wild type Erg20. The iGEM team aims to characterize this gene in vivo in S. cerevisiae. The products will be sent for GC-MS. In particular, we would like to determine whether more monoterpenes are produced with this mutant gene than the wild type ERG20 gene. '''Reference: Oswald M., Fischer M., Dirninger N., Karst F. Monoterpenoid biosynthesis in Saccharomyces cerevisiae. 2007 413:421''' Main Page - Cineole Synthase Gene, BBa_K517004: Main Page - Alpha-Pinene Gene, BBa_K517005: Main Page - Beta-Pinene Gene, BBa_K517006: Main Page - , BBa_K517007: Main Page - , BBa_K517008:
3-Carene Synthase
The 3-carene synthase is a monoterpene synthase isolated from Picea sitchensis by Chris Keeling and Dr. Joerg Bohlmann. This 3-carene synthase was found to confer resistance to the white pine weevil, part of the reason why the iGEM team decided to characterize this part in yeast. This synthase converts farnesyl pyrophosphate to 66.4% (+)-3-Carene, 16.3% Terpinolene, 2.7% (-)-alpha-pinene, 2.5% Terpinen-4-ol, 2.1% (-)-beta-phellandrene, 2.1% myrcene, 1.4% alpha-Terpinol, 0.8% gamma-terpinene, 1% others.
The 3-carene synthase has been previously characterized by expression in C41 DE3 E. coli followed by a His-tag purification. The purified enzymes were assayed in vitro with GPP and sent for GC-MS.
The iGEM team aims to characterize the 3-carene synthase in vivo in S. cerevisiae yeast. The products will be sent for GC-MS.
Reference: Keeling, CI, Weisshar S, Ralph SG, Jancsik S, Hamberger B, Dullat HK, and Joerg Bohlmann. Transcriptome mining, functional characterization, and phylogeny of a large terpene synthase gene family in spruce (Picea spp.) BMC. 2011 March 7 11:43.
Data for Pre-Existing Parts
Experience - Limonene Synthase Composite + Lac promotor, BBa_K118025 (Edinburgh, iGEM 2008): We expressed this part in C41 E. coli that possesses a pRARE plasmid that enables it to translate proteins with rare codons. The limonene synthase was purified from a culture and subjected to an enzymatic assay for its ability to synthesize limonene monoterpene from GPP substrate. GC-MS analysis showed that limonene was present in the sample where GPP was added. In contrast, the control without GPP did not contain limonene. Experience - E. coli Isopentenyl Diphosphate Isomerase, BBa_K115056 (TU Delft 2008): We sequenced this part using the VF2 and VR primers and found that the sequence between the original EcoRI and PstI restriction enzyme sites (1) did not contain the XbaI or SpeI sites and (2) was not homologous to any part of the IDI gene. We recommend that this part is removed from the registry and taken off distribution. BBa_J63006: Yeast GAL1 Promoter
