Volume 94, Issue 11, Pages L81-L83 (June 2008)

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Volume 94, Issue 11, Pages L81-L83 (June 2008) FtsZ Bacterial Cytoskeletal Polymers on Curved Surfaces: The Importance of Lateral Interactions Ines Hörger, Enrique Velasco, Germán Rivas, Marisela Vélez, Pedro Tarazona Biophysical Journal Volume 94, Issue 11, Pages L81-L83 (June 2008) DOI: 10.1529/biophysj.107.128363 Copyright © 2008 The Biophysical Society Terms and Conditions

Figure 1 Shape diagrams for filaments with 3000 FtsZ monomers anchored to a cylindrical surface with radius R. The optimal configurations: line, helix, loop, and ring are sketched at the bottom, and they are found in different regions of the (αθo, αψo) plane, for the optimal bond angles between the monomers, described in panel A. Panel B corresponds to the analysis in Andrews and Arkin (10), without any lateral interaction of the filaments. Panel C uses the experimental values for FtsZ filaments on mica, with an attractive interaction ɛ=2 kT per monomer, and preferential angle αϕo=2.5°. Panel D describes the effect of filament bundling, with a severe reduction of the attraction effects to ɛ=0.2 kT, and making αϕo=0. Biophysical Journal 2008 94, L81-L83DOI: (10.1529/biophysj.107.128363) Copyright © 2008 The Biophysical Society Terms and Conditions