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Yeast Synthetic Drop-out Medium Supplements

without uracil

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food and beverages

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food and beverages


food and beverages


food and beverages


food and beverages

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The selection of plasmids in yeast is based on the use of auxotrophic mutant strains that cannot grow without a specific media component (an amino acid, purine or pyrimidine). Transformation with a plasmid containing the mutated gene enables the transformant to grow on a medium lacking the required component. Sigma′s Yeast Synthetic Drop-Out Media Supplements create a richer medium for better yield and growth rate, and increase the probability of successful transformations when screening libraries or performing gene knock-outs.


The supplements contain all of the following components except as indicated:
Amino acids: All standard amino acids are present at a concentration of 76 mg/L except for leucine, which is present at 380 mg/L.
Other nutrients: Adenine (18 mg/L), inositol (76 mg/L), p-aminobenzoic acid (8 mg/L)

Other Notes

Mixtures of amino acids and other nutrients to be added to Yeast Nitrogen Base Without Amino Acids.


1.92 g will supplement 1 liter of medium.

Storage Class Code

13 - Non Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Vinicius Henrique De Oliveira et al.
Ecotoxicology and environmental safety, 202, 110917-110917 (2020-08-18)
Cadmium (Cd) is an extremely toxic environmental pollutant with high mobility in soils, which can contaminate groundwater, increasing its risk of entering the food chain. Yeast biosorption can be a low-cost and effective method for removing Cd from contaminated aqueous
Dhammika H M L P Navarathna et al.
PloS one, 11(10), e0164449-e0164449 (2016-10-12)
Formation of chlamydospores by Candida albicans was an established medical diagnostic test to confirm candidiasis before the molecular era. However, the functional role and pathological relevance of this in vitro morphological transition to pathogenesis in vivo remain unclear. We compared
Karissa L Cross et al.
mBio, 9(2) (2018-03-15)
The human oral microbiota encompasses representatives of many bacterial lineages that have not yet been cultured. Here we describe the isolation and characterization of previously uncultured Desulfobulbus oralis, the first human-associated representative of its genus. As mammalian-associated microbes rarely have
Xiyan Li et al.
PloS one, 10(12), e0146152-e0146152 (2015-12-31)
Metformin, a leading drug used to treat diabetic patients, is reported to benefit bone homeostasis under hyperglycemia in animal models. However, both the molecular targets and the biological pathways affected by metformin in bone are not well identified or characterized.
Hangrui Liu et al.
Biotechnology and bioengineering, 118(2), 647-658 (2020-10-07)
Yeast has been engineered for cost-effective organic acid production through metabolic engineering and synthetic biology techniques. However, cell growth assays in these processes were performed in bulk at the population level, thus obscuring the dynamics of rare single cells exhibiting


Transformation introduces exogenous DNA into cells, a fundamental genetic modification process demonstrated in Streptococcus pneumoniae.

Genetic engineering enables large-scale expression and isolation of recombinant proteins for research purposes.


Yeasts are considered model systems for eukaryotic studies as they exhibit fast growth and have dispersed cells.

Magnetic-plasmonic nanoparticles: Synthesis and application of Ag/FeCo/Ag nanobeads for cellular organelle imaging and isolation.

Yeast culture techniques: Model systems for eukaryotic studies with liquid media or agar plate growth.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

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