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AMB Express
Figure 1 | AMB Express

Figure 1

From: Highly conserved salt bridge stabilizes a proteinase K subfamily enzyme, Aqualysin I, from Thermus aquaticus YT-1

Figure 1

Crystal structures of AQN (a, c, e; 4DZT) and VPR (b, d, f; 1SH7). (a, b) Common salt bridge positions, (c, d) intrinsic salt bridge positions, (e, f) intrinsic salt bridge positions rotated approximately 90 degrees horizontally from (c, d). The salt bridges of interest are indicated by residue numbers and are represented as stick models. Calcium ions (Ca1, Ca2 and Ca3) are represented as pale green spheres.

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