Enables chromatin binding activity and mediator complex binding activity. Acts upstream of or within meiotic cell cycle and stem cell population maintenance. Located in nucleus. Part of meiotic cohesin complex. Is expressed in several structures, including alimentary system; genitourinary system; integumental system; nervous system; and sensory organ. Human ortholog(s) of this gene implicated in Cornelia de Lange syndrome 2 and developmental and epileptic encephalopathy. Orthologous to human SMC1A (structural maintenance of chromosomes 1A). [provided by Alliance of Genome Resources, Apr 2022]