FIG 4.

Product titer of MaSp1 protein and FSLP protein. (A) Concentration of purified spider silk protein was measured by the Bradford method. (Left) The product titer of purified MaSp1 protein. M1, M2, and M3 represent the weight of three independently produced samples; M is the average of M1, M2, and M3. (Right) The product titer of purified FSLP. F1, F2, and F3 represent the weights of three independently produced samples; F is the average of F1, F2, and F3. (B) The dialyzed silk samples were freeze-dried. (Upper) Freeze-dried sample of MaSp1. (Lower) Freeze-dried sample of FSLP.