CONTENTS 3
Contents
1 Building a Structural Model of KcsA 7
1.1 Downloading and Viewing the Protein . . . . . . . . . . . . . . . 7
1.2 Examining the PDB File . . . . . . . . . . . . . . . . . . . . . . . 9
1.3 Building the KcsA Tetramer . . . . . . . . . . . . . . . . . . . . . 10
1.4 Generating PSF and PDB Files for KcsA . . . . . . . . . . . . . 13
1.5 Solvating the Protein (Optional) . . . . . . . . . . . . . . . . . . 19
2 Placing KcsA in a Membrane 25
2.1 Building a Membrane Patch . . . . . . . . . . . . . . . . . . . . . 25
2.2 Alignment of Membrane and Protein . . . . . . . . . . . . . . . . 26
2.3 Combination of Membrane and Protein . . . . . . . . . . . . . . 27
2.4 Solvation and Ionization . . . . . . . . . . . . . . . . . . . . . . . 30
3 Running a Simulation of KcsA 35
3.1 Melting of Lipid Tails . . . . . . . . . . . . . . . . . . . . . . . . 35
3.2 Minimization and Equilibration with Protein Constrained . . . . 40
3.3 Equilibration with Protein Released . . . . . . . . . . . . . . . . 42
3.4 Production Runs . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
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