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Membrane Proteins

Find membrane proteins in the PDB

In order to identify all transmembrane proteins in the PDB, we are loading the manually annotated transmembrane dataset from mpstruc (UC Irvine).

Mpstruc provides useful information about integral membrane proteins whose crystallographic, or sometimes NMR, structures have been determined to a resolution sufficient to identify TM helices of helix-bundle membrane proteins (typically 4 - 4.5 Å).

The latest mpstruc data is downloaded from on a weekly basis.

These manual annotations are extended using our sequence clusters and according to the following procedure: