Summary
Reprogrammed yeast produce artemisinin precursors and other complex molecules.
In depth
Amyris engineered yeast to make artemisinic acid with about 25 g/L, then chemical conversion to artemisinin. Yeast also produce opioids, cannabinoids, vanillin and spider silk proteins.
Genes from plants or bacteria are introduced, enzymes balanced and flux directed with promoters of different strengths. Competing pathways are knocked out. Scale-up needs optimisation of fermentation.
Example: yeast produce vanillin and cannabinoids such as CBD precursors.
Metabolic engineering rewires an organism's pathways to make a desired compound. Saccharomyces cerevisiae is a favoured chassis because it is well characterised, safe, tolerates industrial conditions and has tools for gene editing.
Engineers add genes from plants or bacteria, remove competing reactions, balance enzyme levels and increase precursor supply. The best-known success is artemisinic acid, a precursor to the malaria drug artemisinin, from Jay Keasling's lab, plus yeast making opioids, cannabinoids and vanillin.
Example: engineered yeast produces the sweetener rebaudioside from stevia.
Common mistake: expecting each added gene to work in isolation; metabolic burden and toxic intermediates often limit yield.
Frequently asked questions
What is Metabolic Pathway Engineering in Yeast?
Reprogrammed yeast produce artemisinin precursors and other complex molecules.
Which area of biology covers Metabolic Pathway Engineering in Yeast, and how advanced is it?
Metabolic Pathway Engineering in Yeast is one of the 56 topics in Biotechnology & Genomics. It is rated Advanced, so it suits learners who want specialist depth. Related topics in this area include Biotechnology, Genetic Engineering, Recombinant DNA.
Can you give an example of Metabolic Pathway Engineering in Yeast?
It reduces reliance on plant extraction.
What should I learn before Metabolic Pathway Engineering in Yeast?
Work through the Beginner topics in Biotechnology & Genomics first, such as Biotechnology, Genetic Engineering, Selective Breeding, then return to Metabolic Pathway Engineering in Yeast. Advanced topics assume the Intermediate vocabulary.
What topics are related to Metabolic Pathway Engineering in Yeast?
The closest topics to Metabolic Pathway Engineering in Yeast are Biotechnology, Genetic Engineering, Recombinant DNA, DNA Ligase. Comparing them side by side is a good way to see how the ideas connect.
How can I check that I understand Metabolic Pathway Engineering in Yeast?
Read the summary and the in-depth section, then use the quick check on the interactive lesson for Metabolic Pathway Engineering in Yeast. To practise the whole of Biotechnology & Genomics, use the Biotechnology & Genomics quiz.
How is Metabolic Pathway Engineering in Yeast different from Biotechnology?
Metabolic Pathway Engineering in Yeast: Reprogrammed yeast produce artemisinin precursors and other complex molecules. Biotechnology: The use of living organisms or their parts to make products or solve problems. Read both side by side and note what each one explains.
What is a common mistake about Metabolic Pathway Engineering in Yeast?
Expecting each added gene to work in isolation; metabolic burden and toxic intermediates often limit yield.
How should I study Metabolic Pathway Engineering in Yeast step by step?
First, read the summary and write the definition in your own words. Second, read the in-depth section and note any example. Third, compare it with Biotechnology and explain the difference aloud. Finally, take the Biotechnology & Genomics quiz and come back to this page for any question you miss.