Enables several functions, including DNA-binding transcription factor activity; DNA-binding transcription factor binding activity; and chromatin binding activity. Acts upstream of or within several processes, including T cell activation; histone methylation; and negative regulation of transcription by RNA polymerase II. Located in heterochromatin and nuclear matrix. Is expressed in several structures, including alimentary system; genitourinary system; integumental system; nervous system; and sensory organ. Orthologous to human SATB1 (SATB homeobox 1). [provided by Alliance of Genome Resources, Apr 2022]