Enables chromatin binding activity and single-stranded DNA binding activity. Acts upstream of or within kinetochore organization; meiotic chromosome condensation; and meiotic chromosome segregation. Located in chromosome, centromeric region. Part of condensin complex. Is expressed in several structures, including alimentary system; brain; genitourinary system; integumental system; and sensory organ. Orthologous to human SMC4 (structural maintenance of chromosomes 4). [provided by Alliance of Genome Resources, Apr 2022]