In Vitro Biochemical Characterization of Cytokinesis Actin-Binding Proteins

Methods Mol Biol. 2016:1369:151-79. doi: 10.1007/978-1-4939-3145-3_12.

Abstract

Characterizing the biochemical and biophysical properties of purified proteins is critical to understand the underlying molecular mechanisms that facilitate complicated cellular processes such as cytokinesis. Here we outline in vitro assays to investigate the effects of cytokinesis actin-binding proteins on actin filament dynamics and organization. We describe (1) multicolor single-molecule TIRF microscopy actin assembly assays, (2) "bulk" pyrene actin assembly/disassembly assays, and (3) "bulk" sedimentation actin filament binding and bundling assays.

Keywords: Actin; Biomimetics; Cytokinesis; Micropatterning; Microscopy; Single molecule; TIRF.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Actins / chemistry
  • Actins / metabolism*
  • Carrier Proteins / chemistry
  • Carrier Proteins / metabolism*
  • Cytokinesis*
  • Fluorescent Dyes
  • Microscopy, Fluorescence / methods*
  • Molecular Imaging / methods*
  • Protein Binding
  • Staining and Labeling

Substances

  • Actins
  • Carrier Proteins
  • Fluorescent Dyes