Acts upstream of or within several processes, including positive regulation of lipoprotein lipase activity; protein glycosylation in Golgi; and regulation of lipid metabolic process. Located in endoplasmic reticulum membrane. Is expressed in several structures, including 1st branchial arch mandibular component; adipose tissue; central nervous system; liver; and vertebral cartilage condensation. Human ortholog(s) of this gene implicated in familial lipase maturation factor 1 deficiency. Orthologous to human LMF1 (lipase maturation factor 1). [provided by Alliance of Genome Resources, Apr 2022]