Predicted to enable glycine amidinotransferase activity. Involved in positive regulation of cold-induced thermogenesis. Located in mitochondrion. Is expressed in several structures, including extraembryonic component; foregut; genitourinary system; limb; and musculature. Human ortholog(s) of this gene implicated in AGAT deficiency and Fanconi renotubular syndrome 1. Orthologous to human GATM (glycine amidinotransferase). [provided by Alliance of Genome Resources, Apr 2022]