SubtInteract

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

Methods to detect protein-protein interactions

• Bacterial Two Hybrid System: BACTH PubMed

• Yeast Two Hybrid System PubMed

• SPINE: A method to detect in vivo protein-protein interactions after cross-linking PubMed

• TAP-Tag purification 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

• interactive protein-protein interaction map
• the beta version of SubtInteract

Protein complexes in B. subtilis

Complexes in Information processing

RNA processing and degradation: the RNA degradosome

=== protein secretion: the signal recognition particle

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

• FruA, SwrC, XhlA, YhaP, YhgE, YkcC, YqfF, CsbC, CssS, FliZ, MreD, PpsC, RacA, Smc, YclI, YdeL, YdgH, YdbI, YesS, YkoT, YopZ, YqbD, YtdP, YueB, YwqJ, YyxA