Chromatin-remodeling complexes:Conserved and plant-specific subunits in Arabidopsis

Adenosine triphosphate-dependent chromatin remodeling complexes are important for the regulation of transcription,DNA replication,and genome stability in eukaryotes.Although genetic studies have illustrated various biological functions of core and accessory subunits of chromatin-remodeling complexes in plants,the identification and characterization of chromatin-remodeling complexes in plants is lagging behind that in yeast and animals.Recent studies determined whether and how the Arabidopsis SWI/SNF,ISWI,INO80,SWR1,and CHD chromatin remodelers function in multi-subunit complexes in Arabidopsis.Both conserved and plant-specific subunits of chromatin-remodeling complexes have been identified and characterized.These findings provide a basis for further studies of the molecular mechanisms by which the chromatinremodeling complexes function in plants.