Minimal Media Selection
Minimal Media Selection - Related Videos
09:35
Enrichment Cultures: Culturing Aerobic and Anaerobic Microbes on Selective and Differential Medias
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2023
Source: Christopher P. Corbo1, Jonathan F. Blaize1, Elizabeth Suter1 1 Department of Biological Sciences, Wagner College, 1 Campus Road, Staten Island NY, 10301 Prokaryotic cells are able to inhabit nearly every environment on this planet. As a kingdom, they possess a great metabolic diversity, allowing them to use a wide variety of molecules for energy generation (1). Therefore, when cultivating these organisms in the lab, all necessary and specific molecules required to make energy must be...
14:43
Selective Labelling of Cell-surface Proteins using CyDye DIGE Fluor Minimal Dyes
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Cited by 14 •
2008
A simple and specific method was demonstrated for fluorescent labeling and enhanced detection of cell surface proteins without a fractionation step. Differential abundance in cell surface proteins was analyzed using two-dimensional (2-D) electrophoresis and Ettan™ DIGE technology.
09:15
Creating the Minimal Group Paradigm
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2023
Source: Julian Wills & Jay Van Bavel—New York University The study of intergroup relations, such as prejudice, conflict, and discrimination, has always been a central topic in social psychology. Does discrimination stem from competition with other groups, a history of conflict, or derogatory stereotypes? Despite an abundance of real-world examples, the ingredients that lead to intergroup discrimination are often unclear. To help solve this problem, a group of psychologists created "minimal...
08:53
Natural Selection - Student Protocol
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2019
Simulating Natural Selection ExpandTo begin, cut the white, black, and gray pipe cleaners into quarters, which should produce a total of 100 pieces that are 3 inches long. Then, cut the green pipe cleaners in the quantities and lengths specified in the video, taking care to minimize waste. This approximates a normal distribution of lengths and should result in an additional 100 pieces total. NOTE: One 12-inch pipe cleaner should yield multiple lengths, for example, a 5-inch piece and a 7-inch...
08:50
Technique and Patient Selection Criteria of Right Anterior Mini-Thoracotomy for Minimal Access Aortic Valve Replacement
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Cited by 6 •
2018
The goal of this protocol is to describe in detail the technique of minimally invasive aortic valve replacement through a right anterior mini-thoracotomy and central aortic cannulation. This technique can potentially enhance patients' comfort and, by reducing post-operative morbidity, promote lowering the length of stay and global costs.
FAQs
Growth reflects whether a cell can produce every required metabolite not supplied by the formulation. A cell capable of synthesizing those compounds grows using the defined carbon source, inorganic salts, and selected nutrients, whereas an auxotrophic mutant fails to grow when its missing requirement is absent. This contrast connects an observable growth phenotype with underlying metabolic capacity.
Adding a candidate nutrient tests whether its absence causes the growth defect. If supplementation restores growth, the result supports a requirement for that compound and can help identify the affected biosynthetic function. This logic also supports genetic complementation, because introducing a functional gene may restore the missing capability and permit growth on the selective formulation.
A defined formulation makes nutritional requirements experimentally separable because each supplied component is known. Changing one nutrient can therefore alter growth in a traceable way, while the controlled composition supports comparisons among cell types or mutants. This design is especially useful for connecting a metabolic pathway or genetic change with a specific nutritional requirement.
Researchers first prepare a chemically defined formulation containing inorganic salts, a defined carbon source, and nutrients chosen for the experiment. They then compare cell growth under that formulation, with or without a specific added compound. Lack of growth identifies cells unable to meet the medium’s demands, whereas restored growth after supplementation reveals the relevant nutritional requirement.
Cells that gain a functional gene through mutation or transformation may acquire the ability to synthesize a previously unavailable metabolite. When cultured under conditions that omit that metabolite, cells with the restored capability are expected to grow. The resulting growth provides selection for the acquired function and supports analysis of the associated genetic change.
This approach helps isolate nutritional mutants and examine the pathways responsible for producing required metabolites. It also supports genetic complementation, in which restored growth links a functional gene with a missing biosynthetic capability. These applications allow investigators to relate genotype or introduced genetic material to a measurable growth phenotype within a controlled biological system.