Electron density puzzles provide real experimental data about the folded shape of the protein. X-ray crystallography or electron microscopy (EM) experiments produce a density cloud in the shape of the folded protein. Sometimes the density is crisp and clear, but other times it can be fuzzy or hard to interpret.


Leaderboard: top electron density soloists

Recent electron density puzzles

Puzzle Status
2209: Electron Density Reconstruction 14 Open for the next 6 days
2203: Electron Density Reconstruction 13 Closed since 8 days ago
2197: Electron Density Reconstruction 12: Round 2 Closed since 22 days ago
2191: Electron Density Reconstruction 12 Closed since about 1 month ago
2179: Electron Density Reconstruction 11 Closed since 2 months ago