Related Experiment Video
Updated: Jun 28, 2026

09:39
Mapping Dysfunctional Protein-Protein Interactions in Disease
Published on: October 24, 2025
Michigan molecular interactions r2: from interacting proteins to pathways.
V Glenn Tarcea1, Terry Weymouth, Alex Ade
1Center for Computational Medicine and Biology, University of Michigan, Ann Arbor, MI 48109, USA.
Nucleic Acids Research
|November 4, 2008
Summary
The Michigan Molecular Interactions (MiMI) database has been redesigned as MiMI Release 2, offering enhanced tools for searching complex molecular interaction data across genes, proteins, and pathways.
Area of Science:
- Bioinformatics
- Computational Biology
- Molecular Biology
Background:
- Molecular interaction data is fragmented across multiple repositories with varying formats and identifiers.
- Existing data integration tools present challenges for comprehensive searching and analysis.
- Scientists require unified access to diverse molecular interaction information.
Purpose of the Study:
- To introduce MiMI Release 2 (MiMIr2), a significantly redesigned system for accessing and analyzing molecular interaction data.
- To enhance data integration and querying capabilities beyond protein interactions to include genes and pathways.
- To improve user experience and data utility through new functionalities and an updated interface.
Main Methods:
- Redesigned the Michigan Molecular Interactions (MiMI) database based on user feedback.
- Integrated data from multiple protein interaction databases, ensuring provenance tracking.
- Extended functionality to include genes, pathways, and concept-based querying (MeSH/GO terms).
- Implemented features such as highlighted sentences, Cytoscape linkage, approximate graph matching, and bulk querying.
Main Results:
- MiMIr2 provides extended coverage from proteins to genes and pathways.
- New features facilitate detailed data exploration, including highlighted source sentences and Cytoscape integration.
- Advanced query options enable searching by MeSH/GO terms and approximate pathway matching.
- The redesigned interface is driven by user focus-group input for improved usability.
Conclusions:
- MiMIr2 offers a comprehensive and user-friendly platform for exploring integrated molecular interaction data.
- The enhanced functionalities significantly improve the ability of scientists to search and analyze complex biological networks.
- MiMIr2 represents a valuable resource for biomedical informatics research, publicly available through NCIBI.
Related Concept Videos
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 polypeptide...
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 polypeptide...
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,...
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 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,...
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,...
Interactions Between Signaling Pathways
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...
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...
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...
