May function in membrane trafficking. Exhibits calcium-dependent phospholipid binding properties (By similarity). Affects directional sperm motility.

Catalyzes the phosphorylation of D-fructose 6-phosphate to fructose 1,6-bisphosphate by ATP, the first committing step of glycolysis (By similarity).

Plays a functionally redundant role in spermatogenesis and growth rate control.

Paramyosin is a major structural component of many thick filaments isolated from invertebrate muscles.

Regulator of muscle contraction and relaxation. Senses mechanical strain that occurs during muscle activity by unfolding in clearly resolvable steps at differing forces.

Structural component of the muscle M-line. Myofilament lattice assembly begins with positional cues laid down in the basement membrane and muscle cell membrane. UNC-89 responds to these signals, localizes, and then participates in assembling an M-line.

Plays a major role in organizing microtubules and spindle poles during mitosis and meiosis in one-cell stage embryos. Required for default nucleus positioning in oocytes.