Protein complexes having exactly 20 subunits are referred to as eicosameric (or sometimes 20-Meric).
Examples of eicosameric protein complexes include;
- The rat GTPCHI/GFRP stimulatory complex (involved in regulating sub cellular signalling cascades)
- The Macromolecular Structure Database (MSD) at the European Bioinformatics Institute (EBI) serves a list of the Probabable Quaternary Structure (PQS) for every protein in the Protein Data Bank (PDB).
- The Protein Interfaces, Surfaces and Assemblies (Pisa) server at the MSD.
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