Related Experiment Video
Updated: Mar 31, 2026
14:06
Mapping Bacterial Functional Networks and Pathways in Escherichia Coli using Synthetic Genetic Arrays
Published on: November 12, 2012
47.1K
Identification of Links Between Cellular Pathways by Genetic Interaction Mapping (GIM)
Christophe Malabat1, Cosmin Saveanu2
1Génétique des Interactions Macromoléculaires (UMR3525-CNRS), Institut Pasteur, 25 rue du Docteur ROUX, 75015, Paris, France.
Methods in Molecular Biology (Clifton, N.J.)
|October 21, 2015
Summary
This study introduces a fast and efficient method for mapping gene interactions in yeast using molecular barcodes. This barcode-based genetic interaction mapping (GIM) allows for high-throughput analysis of double mutant phenotypes, revealing functional gene links.
Area of Science:
- * Yeast functional genomics and systems biology.
- * Molecular genetics and high-throughput screening.
Background:
- * The yeast systematic deletion collection enables functional gene linkage studies by analyzing double mutant phenotypes.
- * Molecular barcodes at each deleted locus allow for quantitative analysis of mutant abundance in pooled cultures.
Purpose of the Study:
- * To describe protocols for preparing haploid double mutant yeast pools.
- * To detail methods for analyzing mutant composition using barcode microarrays.
- * To outline strategies for extracting functional gene information from genetic interaction screens.
Main Methods:
- * Utilizing the yeast systematic deletion collection with molecular barcodes.
- * Preparing pools of haploid double mutant Saccharomyces cerevisiae cells.
- * Employing barcode microarrays for quantitative analysis of pooled mutant composition.
- * Analyzing double mutant growth rates to identify synthetic sick and epistatic interactions.
Main Results:
- * Barcode-based genetic interaction mapping (GIM) provides a fast and precise method for measuring double mutant growth rates.
- * This approach facilitates the identification of both aggravating (synthetic sick) and alleviating (epistatic) genetic interactions.
- * The protocols enable efficient analysis of thousands of individual strains in batch cultures.
Conclusions:
- * Barcode-enabled GIM is a cost-effective and high-throughput strategy for uncovering functional gene relationships in yeast.
- * The described protocols streamline the process of genetic interaction mapping, enhancing the study of complex genetic networks.
- * This methodology offers valuable insights into gene function and cellular pathways through precise measurement of double mutant phenotypes.
Related Concept Videos
01:19Interactions Between Signaling Pathways
7.9K
Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
7.9K
01:09Epistasis Analysis
6.2K
Although Mendel chose seven unrelated traits in peas to study gene segregation, most traits involve multiple gene interactions that create a spectrum of phenotypes. When the interaction of various genes or alleles at different locations influences a phenotype, this is called epistasis. Epistasis often involves one gene masking or interfering with the expression of another (antagonistic epistasis). Epistasis often occurs when different genes are part of the same biochemical pathway. The...
6.2K
02:26Protein Networks
4.7K
An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
4.7K
01:29Pharmacogenomics: Identification of New Drug Targets
84
Advances in genomics have profoundly influenced drug discovery by increasing both the speed and accuracy of pharmaceutical development. Pharmacogenomics, which examines how genetic variation influences drug response, facilitates the identification of novel therapeutic targets and enables patient stratification for personalized treatment. These strategies contribute to improved drug efficacy, minimized adverse effects, and more efficient clinical trial design.Mapping genetic differences...
84