Over the past couple of decades metabolic engineering and synthetic biology has enabled researchers to develop biological systems for the purpose of producing pharmaceuticals, high value chemicals or other medical devices/ instruments. Most of the synthetic biology work is limited to ''E. coli''. Although ''E. coli'' has been exhaustively studied and utilized it does have its drawbacks, like requirement of specific temperatures and growth conditions.  

<li> It is reported to inhibit pancreatic and prostrate cancers.  

<li> Additional uses include use as a flavoring agent and in perfumes.

Geraniol is an intriguing 10 carbon compound with diverse applications including use as an agent for cancer prevention, fragrance, insect repellent, proposed biofuel etc. We explored and engineered a novel gene expression tool (BBa_K890000) for ''Methanococcus'' with the capability of expressing geraniol synthase from ''Ocimum basilicum'' (BBa_K1138000). We report the biosynthesis of geraniol at over 5% of DCW by transforming the vector into Methanococcus thereby expanding its native isoprenoid pathway. Furthermore we engineered new vectors (BBa_K1138001 & BBa_K1138002) with the potential capability of regulating and quantifying the expression of desired proteins via red fluorescence. This work demonstrates the use of ''Methanococcus'' as a cell factory for chemical production and highlights synthetic biology advancement by engineering new systems over traditional biological systems such as ''Escherichia coli''.