SubtInteract

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Protein-protein interactions are essential for many activities of any living cell. These interactions involve multi-protein complexes that take part in central processes such as DNA replication, transcription or translation. Protein-protein interactions may also be involved in a variety of regulatory events. Metabolic enzymes do often form transien complexes that represent a complete pathways. These complexes are called metabolon. Finally, many interactions may be of a transient nature.


Now online: A description of SubtiWiki, SubtiPathways, and SubtInteract in the 2012 Database issue of Nucleic Acids Research

Ulrike Mäder, Arne G Schmeisky, Lope A Flórez, Jörg Stülke
SubtiWiki--a comprehensive community resource for the model organism Bacillus subtilis.
Nucleic Acids Res: 2012, 40(Database issue);D1278-87
[PubMed:22096228] [WorldCat.org] [DOI] (I p)


Methods to detect protein-protein interactions

  • Yeast Two Hybrid System PubMed
  • SPINE: A method to detect in vivo protein-protein interactions after cross-linking PubMed
  • in vivo detection of protein-protein interaction using DivIVA and GFP PubMed

Attention: Each technique detects only about 33% of all interactions PubMed

Visualization of protein-protein interactions in B. subtilis

Protein complexes in B. subtilis

Complexes in Cellular processes

cell wall synthesis and cell shape: the cell wall biosynthetic complex

cell division: the divisome

Complexes in Metabolism

the metabolons of glycolysis and the TCA cycle PubMed

Complexes in Information processing

DNA replication: the replisome

transcription: RNA polymerase

translation: the ribosome

synthesis of glutamyl-tRNA(Gln): the transamidosome (GatA-GatB-GatC)-GltX-trnS-Gln

RNA processing and degradation: the RNA degradosome

protein secretion: the signal recognition particle

Complexes involved in Lifestyles

general stress response: the stressosome

DNA uptake: the pseudopilus PubMed

spore germination: the germinosome

Suspected hub proteins potentially involved in a large number of interactions (as deduced from a Yeast two-hybrid analysis)

Elodie Marchadier, Rut Carballido-López, Sophie Brinster, Céline Fabret, Peggy Mervelet, Philippe Bessières, Marie-Françoise Noirot-Gros, Vincent Fromion, Philippe Noirot
An expanded protein-protein interaction network in Bacillus subtilis reveals a group of hubs: Exploration by an integrative approach.
Proteomics: 2011, 11(15);2981-91
[PubMed:21630458] [WorldCat.org] [DOI] (I p)


Important publications