Predicted to enable protein-glutamine gamma-glutamyltransferase activity. Predicted to be involved in peptide cross-linking. Predicted to act upstream of or within mating plug formation. Predicted to be located in Golgi apparatus. Predicted to be active in collagen-containing extracellular matrix. Orthologous to human TGM4 (transglutaminase 4). [provided by Alliance of Genome Resources, Apr 2022]