Predicted to enable protein-glutamine gamma-glutamyltransferase activity. Involved in blood coagulation. Predicted to be located in cytoplasm and extracellular region. Biomarker of gastric ulcer. Human ortholog(s) of this gene implicated in artery disease (multiple); factor XIII deficiency; priapism; and thrombophilia (multiple). Orthologous to human F13A1 (coagulation factor XIII A chain). [provided by Alliance of Genome Resources, Apr 2022]