The present invention relates to protein complexes based on AN3-interactors, more specifically interactors that are plant variants subunits of the SWI/SNF complex, and proteins that interact with those subunits, preferably in an AN3 free protein complex. It relates further to the use of the complexes to promote plant growth, and to a method for stimulating the complex formation, by overexpressing at least one, preferably at least two members of a complex.
