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Protein Networks

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,...

Regulated mRNA Transport

Regulated mRNA Transport

In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing...

Conserved Binding Sites

Conserved Binding Sites

Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...

Ligand Binding and Linkage

Ligand Binding and Linkage

Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked. In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence...

Protein-protein Interfaces

Protein-protein Interfaces

Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...

Ligand Binding Sites

Ligand Binding Sites

Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...

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Related Experiment Video

Updated: Oct 20, 2025

JUMPn: A Streamlined Application for Protein Co-Expression Clustering and Network Analysis in Proteomics

JUMPn: A Streamlined Application for Protein Co-Expression Clustering and Network Analysis in Proteomics

Published on: October 19, 2021

Spatial localisation meets biomolecular networks.

Govind Menon¹, J Krishnan^2,3

¹Chemical Engineering, Centre for Process Systems Engineering, London, UK.

Nature Communications

|September 10, 2021

Summary

This summary is machine-generated.

Spatial organization is crucial for cellular networks, influencing behavior, pattern formation, and data analysis. Our framework reveals its role as a regulator and engineering tool in biology.

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Last Updated: Oct 20, 2025

JUMPn: A Streamlined Application for Protein Co-Expression Clustering and Network Analysis in Proteomics

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Published on: October 19, 2021

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Localizing Protein in 3D Neural Stem Cell Culture: a Hybrid Visualization Methodology

Localizing Protein in 3D Neural Stem Cell Culture: a Hybrid Visualization Methodology

Published on: December 19, 2010

Area of Science:

Cellular and Molecular Biology
Systems Biology
Synthetic Biology
Biotechnology

Background:

Spatial organization, through localization and compartmentalization, is fundamental to cellular biomolecular networks but remains poorly understood.
Existing technologies in systems and synthetic biology require a systematic approach to study the interplay between networks and spatial organization.

Purpose of the Study:

To develop a systems framework for elucidating the role of spatial organization in cellular biomolecular networks.
To investigate the multifaceted effects of spatial localization of network components on network behavior and capabilities.

Main Methods:

Development of a novel systems framework to analyze spatial organization in biological networks.
Focus on the impact of spatial localization of network components.

Main Results:

Spatial localization acts as a distinct regulator of network behavior, enabling new network capabilities.
It significantly influences pattern formation and self-organization within cellular systems.
Spatial factors impact the inference of temporal networks from experimental data and serve as an engineering tool for network rewiring and design.

Conclusions:

The study provides fundamental insights into the critical role of spatial organization in biological networks.
These findings have broad implications for understanding natural and engineered biological systems, including cell-free systems, systems chemistry, and bionanotechnology.