The current version of MFIB contains 1122 protein complexes.
Each structure detailing the interactions were determined by either X-ray (949 out of 1122, accounting for 84.58%) or NMR (167 out of 1122, accounting for 14.88%). Four structures were determined by electron-microscopy (4 out of 1122).
The interactions are formed by 2-7 protein chains with the following oligomeric state distribution:
Entries in MFIB cover a wide range of taxonomic groups. The most represented species in MFIB are shown here:
For each MFIB entry, there is an evidence demonstrating that the participating proteins are unstructured prior to the interaction and their folding is coupled to binding. The different MFIB entries are supported by three types of evidence (on complex and chain levels).
