title: Growth of large polymer-actin complexes.
abstract: Polymer-actin complexes as large as 10-50 microm with filamentous, branched, stranded, and ring shapes are obtained when fluorescent phalloidin-labeled F-actin is mixed with some synthetic polymers carrying positive charges such as poly-L-lysine, x,y-ionene bromide polymers. All growth of these complexes occurs cooperatively at some certain critical polymer concentrations, regardless of the chemical structure of the polymer, while the morphology of the complexes is substantially influenced by the chemical structure of the polymer. Poly-Lys-actin complex grows preferentially along the filament axis even above the critical concentration. 3,3-ionene-actin complexes show completely homogeneous filaments below the critical concentration but forms bundles at a higher concentration. Occasionally, ring shape complexes can be observed in the 6,6-ionene-actin complex.
authors: Graduate School of Science, Hokkaido University, Japan.
authors: Akira
authors: A
authors: Kakugo
authors: Kazuhiro
authors: K
authors: Shikinaka
authors: Kanae
authors: K
authors: Matsumoto
authors: Jian Ping
authors: JP
authors: Gong
authors: Yoshihito
authors: Y
authors: Osada
mesh_terms: D000199:Actins / Q000737:chemistry*; D002412:Cations / Q000737:chemistry; D007091:Image Processing, Computer-Assisted; D008854:Microscopy, Electron; D008856:Microscopy, Fluorescence; D015394:Molecular Structure; D010590:Phalloidine / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D013816:Thermodynamics
chemical_list: D000199:Actins; D002412:Cations; D011108:Polymers; D010590:Phalloidine