CYLC2 (Cylicin 2) is specifically expressed in testis and is part of the cytoskeletal calyx of mammalian sperm heads. Cylicin II may play a role in the morphogenesis of the sperm head. CYLC2 is a Protein Coding gene. GO annotations related to CYLC2 include structural constituent of cytoskeleton. An important paralog of CYLC2 is CYLC1.