May localize to synaptonemal complexes in meiotic spermatocytes. Expressed in testis (at protein level). Also expressed in ovary. Not detected in other tissues tested. Detected in testis from 1 day postpartum (dpp) onwards (at protein level). Expression increases through to 28 dpp and remains high thereafter (at protein level). Highly expressed in spermatocytes at leptotene and pachytene stages of meiosis. Belongs to the XLR/SYCP3 family.