The toxin in this puzzle is from Agelenopsis aperta, known as the desert grass spider. This spider is native to the southwestern United States and Mexico, and seems relatively innocuous as compared to the cobras and scorpions that inhabit other revisiting puzzles.
The puzzle protein has 48 segments with the sequence:
This sequence is found in these Protein Data Bank entries:
The puzzle protein can have four disulfide bridges, identified in 1IVA as 4-20, 12-25, 19-36, and 27-34. In recent visits to this puzzle, each bridge is awarded a bonus of 250 points.
The recipe Bridge Wiggle v 1.2.1 - Brow42 accepts the bridges in this format:
4,20 12,25 19,36 27,34
This puzzle does not have any ligands.
This puzzle has a single chain.
See players' solutions from previous visits this puzzle: