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2746: Revisiting Puzzle 81: Calcium Ion Binding Protein

Open for the next 1 day

Novice Overall Prediction

Summary

Created
April 01, 2026
Expires
Max points
100
Description

This is a throwback puzzle to the early days of Foldit. This protein, which inhibits muscle contraction in the absence of calcium ions, changes conformation in the presence of calcium to allow muscle contraction. We are revisiting old Foldit puzzles so we can see how useful the recent additions to the game have been.

Sequence
QAEARAFLSEEMIAEFKAAFDMFDADGGGDISTKELGTVMRMLGQNPTKEELDAIIEEVDEDGSGTIDFEEFLVMMVRQMK

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