Puzzle 1516: Foldit Player Design with Electron Density
The protein in this puzzle is a solved Foldit design, the fourth player-designed protein to achieve this distinction. The protein was designed by fiendish_ghoul in Puzzle 1331. The protein is named "Peak6", and will appear in the PDB as 6MRS.
The same protein has appeared as a de-novo freestyle in Puzzle 1511.