Predicted to enable heparin binding activity. Predicted to be an extracellular matrix structural constituent. Acts upstream of or within establishment of protein localization to membrane; regulation of synaptic assembly at neuromuscular junction; and skeletal muscle acetylcholine-gated channel clustering. Located in neuromuscular junction. Used to study congenital myasthenic syndrome 5. Human ortholog(s) of this gene implicated in congenital myasthenic syndrome 5. Orthologous to human COLQ (collagen like tail subunit of asymmetric acetylcholinesterase). [provided by Alliance of Genome Resources, Apr 2022]