Molecular Dynamics Simulation of Barnase: Contribution of Noncovalent Intramolecular Interaction to Thermostability

Figure 5

Oxygen-nitrogen distance of salt bridges plots. Time evolution of distance between selected atoms during simulation. (a) Distance between (1) Asp8-Arg110 and (2) Arg110-Asp12, which form salt bridge network in the core1. (b) Distance between (1) Asp54-Lys27 and Lys27-Glu73; these residues form salt bridges close to the core2. (c) Distance between (1) Arg83-Asp75 and (2) Asp75-Arg87, (d) (1) Lys66-Asp93 and (2) Asp93-Arg69, and (e) Glu60-Lys62; these above-mentioned atom pairs form salt bridge close to the core3.

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