Coarse Grain Forcefield for Biomolecules 
F.J. van Eerden, D.H. de Jong, A.H. de Vries, T. A. Wassenaar, S.J. Marrink. Characterization of thylakoid lipid membranes from cyanobacteria and higher plants by molecular dynamics simulations. BBA-Biomembranes, 1848:1319–1330, 2015. DOI:10.1016/j.bbamem.2015.02.025
Interested in creating your own thylakoids? Get the starterkit!
There is a PhD position available at the MD group on Multiscale Modeling of Self-Assembled Molecular Nanotubes. For details see the announcement.
The Dry Martini paper is out
C. Arnarez, J.J. Uusitalo, M.F. Masman, H.I. Ingólfsson, D.H. de Jong, M.N. Melo, X. Periole, A.H. De Vries, S.J. Marrink. Dry Martini, a coarse-grained force field for lipid membrane simulations with implicit solvent. JCTC, 11:260–275, 2015. abstract
Try out yourself? Download parameters here.
Plasma membrane model composed of 60+ lipid typesH.I. Ingólfsson, M.N. Melo, F.J. van Eerden, C. Arnarez, C.A. López, T.A. Wassenaar, X. Periole, A.H. De Vries, D.P. Tieleman, S.J. Marrink. Lipid organization of the plasma membrane. JACS, 136:14554-14559, 2014. doi: 10.1021/ja507832e open access
Example membranes and parameter files are provided here
Publication featuring the Martini force field in Science:
"Polyunsaturated phospholipids facilitate membrane deformation and fission by endocytic proteins"
A beta version of Martini parameters for both single-stranded and double-stranded DNA are available for testing.