Described in this application are proteins and host cells involved in methods of producing isoprenoid precursors and/or isoprenoids.

The present disclosure provides compositions and methods for producing transgenic plants and other organisms that exhibit increased production of mogroside compounds, in particular mogroside V, and the mogroside compounds, plants and plant parts so produced.

Recombinant microorganisms, plants, and plant cells are disclosed that have been engineered to express novel recombinant genes encoding steviol biosynthetic enzymes and UDP-glycosyltransferases (UGTs). Such microorganisms, plants, or plant cells can produce steviol or steviol glycosides, e.g., rubusoside or Rebaudioside A, which can be used as natural sweeteners in food products and dietary supplements.

A recombinant cell having a function of synthesizing acetyl-CoA from methyltetrahydrofolate, carbon monoxide, and CoA, including: a gene that expresses an exogenous NAD(P)H consumption pathway, the gene being expressed in the recombinant cell, wherein expression in at least one of endogenous NAD(P)H consumption pathways of the recombinant cell is down-regulated, and the endogenous NAD(P)H consumption pathway is different from the exogenous NAD(P)H consumption pathway, and the recombinant cell produces an organic compound having 4 or more carbon atoms from at least one selected from the group consisting of carbon monoxide and carbon dioxide via the exogenous NAD(P)H consumption pathway.

This application describes methods, including non-naturally occurring methods, for biosynthesizing unsaturated pentahydrocarbons, such as isoprene and intermediates thereof, via the mevalonate pathway, as well as non-naturally occurring hosts for producing isoprene.

Genetically-encoded volatile synthetic biomarkers and methods for detection of various cancers in a subject are provided. In various aspects, embodiments provide compositions for breath-based cancer detection comprising at least one nucleic acid molecule encoding a synthase that catalyzes production of said volatile organic biomarker. The invention also provides devices, such as an electronic nose device, portable electronic nose device, and/or breath analyzer, for breath-based cancer detection comprising said compositions and at least one analyzer.

The invention provides a method for producing a terpene or a precursor thereof by microbial fermentation. Typically, the method involves culturing a recombinant bacterium in the presence of a gaseous substrate whereby the bacterium produces a terpene or a precursor thereof, such as mevalonic acid, isopentenyl pyrophosphate, dimethylallyl pyrophosphate, isoprene, geranyl pyrophosphate, farnesyl pyrophosphate, and/or farnesene. The bacterium may comprise one or more exogenous enzymes, such as enzymes in mevalonate, DXS, or terpene biosynthesis pathways.

The present invention provides for a genetically modified host cell capable of producing isopentenol and/or 3-methyl-3-butenol, comprising (a) an increased expression of phosphomevalonate decarboxylase (PMD) (b) an increased expression of a phosphatase capable of converting isopentenol into 3-methyl-3-butenol, (c) optionally the genetically modified host cell does not express, or has a decreased expression of one or more of NudB, phosphomevalonate kinase (PMK), and/or PMD, and (d) optionally one or more further enzymes capable of converting isopentenol and/or 3-methyl-3-butenol into a third compound, such as isoprene.

Recombinant microorganisms, plants, and plant cells are disclosed that have been engineered to express novel recombinant genes encoding steviol biosynthetic enzymes and UDP-glycosyltransferases (UGTs). Such microorganisms, plants, or plant cells can produce steviol or steviol glycosides, e.g., rubusoside or Rebaudioside A, which can be used as natural sweeteners in food products and dietary supplements.

The present disclosure provides genetically modified host cells that produce a cannabinoid, a cannabinoid derivative, a cannabinoid precursor, or a cannabinoid precursor derivative. The present disclosure provides methods of synthesizing a cannabinoid, a cannabinoid derivative, a cannabinoid precursor, or a cannabinoid precursor derivative.