Predicted to enable protein-glutamine gamma-glutamyltransferase activity. Acts upstream of or within mating plug formation. Predicted to be located in Golgi apparatus. Predicted to be active in collagen-containing extracellular matrix. Is expressed in anterior prostate gland and prostate gland dorsolateral lobe. Orthologous to human TGM4 (transglutaminase 4). [provided by Alliance of Genome Resources, Apr 2022]