Is an ortholog of human CHSY1 (chondroitin sulfate synthase 1). Exhibits enzyme binding activity. Is involved in several processes, including morphogenesis of an epithelium\; oviposition\; and positive regulation of vulval development. Localizes to the cytoplasm. Is expressed in the oocyte\; the vulva\; and uterus. Human ortholog(s) of this gene are implicated in temtamy preaxial brachydactyly syndrome.