The RCSB.org server holds more than 150000 PDB files but there are only a few thousand
different types of protein folds. So it is curious to see a few simplest.
The page is based on Tertiary
Protein Structure and Folds,
All-Alpha Topologies (helix bundles).
Small Disulphide-rich Protein Folds.
"MiniMol" molecule viewer
updated 7 Sep 2020