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. Author manuscript; available in PMC: 2017 Jul 6.
Published in final edited form as: Annu Rev Biophys. 2015;44:311–337. doi: 10.1146/annurev-biophys-051013-023008

Figure 1.

Figure 1

Degree of oligomer formation in membrane protein structures. Data was taken from the PDB_TM database (103) dated 2014.08.01 containing 2241 proteins. No filtering of low-resolution models or redundancy was applied. Thus, each data-point may contain a number of representatives from the same structural family. This analysis is necessarily biased toward those proteins that crystallize and are well studied. Oligomers are formed via interactions between membrane domains as well as between fused water-soluble domains.