Immobilization of Alkaline Collagenase from Bacillus subtilis onto Sulfonated Polystyrene Nanospheres for Hydrolysis of Tilapia Collagen

Figure 6

Tertiary structure of the Bacillus subtilis protein. (a–d) Structure diagrams marked with different colors. (a) Rainbow: (N-terminus ⟶ C-terminus). (b) Hydrophobic: (least hydrophobic ⟶ most hydrophobic). (c, d) Charged: red (negative) and blue (positive).

(a)

(b)

(c)

(d)