While I was working on my project this weekend, I came up with a new idea! Instead of myosin and actin I am now looking at EMILIN-1. This protein is responsible for the formation of elastic fiber. This gave me the idea to create a toy similar to silly putty, flubber! I used to love to play with this stuff when I was a kid. The protein structure is pretty cool too! 
Protein artists
Protein science
Studio tricks and materials
PDBID is 2KA3