Predicted to enable identical protein binding activity. Predicted to be an extracellular matrix structural constituent. Involved in response to hydrostatic pressure and response to xenobiotic stimulus. Located in extracellular space. Used to study hepatocellular carcinoma. Biomarker of gastric ulcer and ulcerative colitis. Human ortholog(s) of this gene implicated in primary angle-closure glaucoma. Orthologous to human COL18A1 (collagen type XVIII alpha 1 chain). [provided by Alliance of Genome Resources, Apr 2022]