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Related Concept Videos

Background and Environment Affect Phenotype02:27

Background and Environment Affect Phenotype

Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
Epistasis Analysis01:09

Epistasis Analysis

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...
Gene-Environment Interactions01:20

Gene-Environment Interactions

Gene expression is a dynamic process that is significantly influenced by environmental factors. This interaction underlies the complex nature of biological development and the phenotypic differences observed among individuals, even among those with identical genetic makeups. Factors such as radiation, temperature, behavior, nutrition, and stress play pivotal roles in determining how genes are expressed. The concept of the reaction range is central to understanding this interaction. It posits...
Protein Networks02:26

Protein Networks

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,...
Protein Networks02:26

Protein Networks

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,...
Behavioral Genetics and Its Designs01:23

Behavioral Genetics and Its Designs

Behavior genetics explores how genetic inheritance influences human behavior. It focuses on how genes, passed from parents to offspring, contribute to the development of behavioral traits and tendencies. This branch of genetics seeks to understand the complex interplay between inherited genetic factors and environmental influences in shaping our behaviors.
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...

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A Comparative Approach to Characterize the Landscape of Host-Pathogen Protein-Protein Interactions
13:56

A Comparative Approach to Characterize the Landscape of Host-Pathogen Protein-Protein Interactions

Published on: July 18, 2013

Comparative interaction networks: bridging genotype to phenotype.

Pedro Beltrao1, Colm Ryan, Nevan J Krogan

  • 1Department of Cellular and Molecular Pharmacology, University of California, San Francisco, CA 94158, USA. pedro.beltrao@ucsf.edu

Advances in Experimental Medicine and Biology
|July 24, 2012
PubMed
Summary
This summary is machine-generated.

Large-scale biological networks reveal how genetic changes influence traits over evolutionary time. Understanding these protein-protein and genetic interactions aids in developing new therapies.

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Area of Science:

  • Biochemistry
  • Genetics
  • Evolutionary Biology

Background:

  • Biomedical research has rapidly advanced in characterizing biological systems.
  • High-throughput methods for analyzing biological networks have emerged.

Purpose of the Study:

  • To review progress in large-scale methods for determining protein-protein, genetic, and chemical-genetic interaction networks.
  • To discuss the evolutionary implications and applications of these networks in medicine.

Main Methods:

  • Review of recent advancements in high-throughput screening techniques.
  • Comparative analysis of interaction network data across species.
  • Examination of evolutionary trends in protein-protein and genetic interactions.

Main Results:

  • Protein-protein interactions show varying rates of divergence; co-complex membership is conserved, while promiscuous interactions diverge rapidly.
  • Epistatic interactions are conserved within complex subunits but diverge across complexes or pathways.
  • Evolutionary trends inform the interpretation of cross-species chemical-genetic studies.

Conclusions:

  • Interaction networks provide detailed insights into genotype-phenotype relationships.
  • These networks are valuable for interpreting genetic variation and designing combinatorial therapeutics.
  • Understanding evolutionary patterns in biological networks can shape future therapeutic strategies.