Related Experiment Video
Updated: May 21, 2026

11:23
A Multilayer Microfluidic Platform for the Conduction of Prolonged Cell-Free Gene Expression
Published on: October 6, 2019
Synthetic approaches to understanding biological constraints
1Massachusetts Institute of Technology, Department of Physics, Cambridge, MA, USA.
Current Opinion in Chemical Biology
|June 12, 2012
Summary
Laboratory microbes offer powerful systems for studying biological constraints. Research advances quantitative descriptions of cellular economies, gene expression trade-offs, fitness landscapes, and stable bacterial ecosystems.
Area of Science:
- Microbiology and Systems Biology: Focuses on unicellular organisms as model systems.
Background:
- Microbes are easily cultured and genetically manipulated, making them ideal for laboratory research.
- Unicellular organisms are used to investigate biological constraints across various organizational levels.
Purpose of the Study:
- To develop and test theories concerning biological constraints using microbial laboratory systems.
- To advance the quantitative description of biological constraints in cellular processes and ecosystems.
Main Methods:
- Utilizing laboratory-cultured microbes with easily manipulated genomes.
- Applying quantitative approaches to study cellular economies and gene expression.
- Investigating fitness landscapes and the stability of bacterial ecosystems.
Main Results:
- Progress in formulating global laws for cellular economies.
- Experimental measurement of trade-offs in optimal gene expression.
- Description of naturally occurring fitness landscapes.
- Understanding requirements for stable bacterial ecosystems.
Conclusions:
- Laboratory microbial systems are crucial for understanding fundamental biological constraints.
- Quantitative descriptions are advancing our knowledge of cellular function and ecological stability.
Related Concept Videos
Synthetic Biology
Synthetic biology is an interdisciplinary science that involves using principles from disciplines such as engineering, molecular biology, cell biology, and systems biology. It involves remodeling existing organisms from nature or constructing completely new synthetic organisms for applications such as protein or enzyme production, bioremediation, value-added macromolecule production, and the addition of desirable traits to crops, to name a few.
Golden rice
Golden rice is a genetically modified...
Golden rice
Golden rice is a genetically modified...
Genetic Screens
Genetic screens are tools used to identify genes and mutations responsible for phenotypes of interest. Genetic screens help identify individuals or a group of people at risk of developing genetic diseases and help them with early intervention, targeted therapy, and reproductive options.
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which result in visible changes...
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which result in visible changes...
Bioreactor Controls-III
Strain improvement is a foundational strategy in industrial microbiology aimed at maximizing microbial productivity, particularly because natural isolates typically yield commercially valuable products in very low concentrations. Although optimizing the culture medium and environmental conditions can improve yields, these adjustments are inherently limited by the organism’s genetic potential. As a result, the focus shifts toward genetic modifications to enhance biosynthetic capacity. The...
Mechanistic Models: Overview of Compartment Models
Mechanistic models, a category encompassing both physiological and compartmental modeling, differ from empirical models' approaches to incorporating known factors about the systems being modeled. Empirical models describe data with minimal assumptions, while mechanistic models aim to provide a robust description of available data by specifying assumptions and integrating known factors about the system. Compartmental analysis is a key example of a mechanistic model in pharmacokinetics and...
Biosynthesis in Bacteria
Biosynthesis in bacteria is a fundamental anabolic process that generates essential macromolecules, including proteins, nucleic acids, lipids, and polysaccharides. These macromolecules are critical for cellular growth, replication, and function. The process is tightly regulated and energetically linked to catabolic pathways to ensure optimal resource utilization.Biosynthetic pathways begin with precursor metabolites such as pyruvate, acetyl-CoA, and glucose-6-phosphate derived from glycolysis,...
Evolutionary Relationships through Genome Comparisons
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...

