Involved in cellular sodium ion homeostasis. Predicted to be located in extracellular region. Predicted to be part of membrane attack complex. Used to study visual epilepsy. Biomarker of membranous glomerulonephritis and myocardial infarction. Human ortholog(s) of this gene implicated in complement component 7 deficiency. Orthologous to human C7 (complement C7). [provided by Alliance of Genome Resources, Apr 2022]