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1028: Revisiting Electron Density Puzzle 730
Status: Closed


Name: 1028: Revisiting Electron Density Puzzle 730
Status: Closed
Created: 12/19/2014
Points: 100
Expired: 01/04/2015 - 14:00
Difficulty: Intermediate
Description: We're revisiting this old electron density puzzle to test some recent changes to Foldit! In this puzzle, there are bits of density which don't belong to the copy of the protein that you're working on. You'll have to decide which bits of density to match with, and which bits to ignore. Try to fit the protein into the density to get the best score! Secondary structure predictions are posted in the puzzle comments along with info about available tools in the game.
Categories: Electron Density, Overall, Prediction

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bkoep's picture
User offline. Last seen 6 hours 35 min ago. Offline
Joined: 11/15/2012
Groups: Foldit Staff
Secondary structure predictions

Here is the sequence logo predicted by the SAM server:

H = helix
E = sheet
C = loop (or coil)

The taller the letter at each position, the higher the probability of that specific secondary structure for that amino acid.

The above predictions are already on the starting model (based on the horizontal lines in the above figure).

Cutaway view hint:
If you hover your mouse over a segment and type shift-Q, the game will hide parts of the protein and cloud that are not in the same plane as that segment - it cuts down on how much cloud you see at one time and makes it easier to focus. Q returns to normal view.

Joined: 09/21/2011
Groups: Void Crushers
Give us an unkown one pls

This is the third repeat of an ED puzzle. I would really like to see one that hasnt been solved yet.
BTW, these kind of puzzles are now very good playable, congrats to the devs on the speed improvement since NC.

bkoep's picture
User offline. Last seen 6 hours 35 min ago. Offline
Joined: 11/15/2012
Groups: Foldit Staff

The difficulty is finding test cases appropriate for Foldit. Most unsolved cases involve low-resolution density maps for very large proteins.

We've been running these revisited puzzles to test new ED code and recalibrate density scoring, but we're also anxious for the next unsolved density map!

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Developed by: UW Center for Game Science, UW Institute for Protein Design, Northeastern University, Vanderbilt University Meiler Lab, UC Davis
Supported by: DARPA, NSF, NIH, HHMI, Amazon, Microsoft, Adobe, Boehringer Ingelheim, RosettaCommons