Showing posts with label MD. Show all posts
Showing posts with label MD. Show all posts

Thursday, March 11, 2010

molecular dynamics results analysis

Good explanation of Essential Dynamics: PDF.

Friday, December 18, 2009

Thursday, December 17, 2009

Steered MD in GROMACS (pull code)

The pull code allows to apply a force between two centers of mass (for >1 groups). It appears to be useful to simulate protein penetration into lipid membrane (channel formation). Config must have a following lines:
pull_start = yes
pull_init1 = 0
pull = umbrella
pull_geometry = direction
pull_group0 = Protein
pull_group1 = POPC
pull_vec1 = 0 0 0.5
pull_k1 = 3000
pull_rate1 = 0.01 ; nm/ps Extreme parameters for extreme pulling

discussions: [1], [2]

Friday, October 2, 2009

b-Amyloid Ion Channels

Models of b-Amyloid Ion Channels in the Membrane Suggest That Channel Formation in the Bilayer Is a Dynamic Process: amyloid ion channel formation mechanism suggested (src)