Predicted to be an extracellular matrix structural constituent. Predicted to be involved in extracellular matrix organization. Located in collagen-containing extracellular matrix. Is expressed in several structures, including branchial arch; forelimb bud; genitourinary system; somite; and vibrissa. Orthologous to human COL23A1 (collagen type XXIII alpha 1 chain). [provided by Alliance of Genome Resources, Apr 2022]