Predicted to enable solute:proton symporter activity. Predicted to be involved in BMP signaling pathway and SMAD protein signal transduction. Predicted to be located in endoplasmic reticulum membrane. Predicted to be integral component of membrane. Human ortholog(s) of this gene implicated in hereditary spastic paraplegia 42. Orthologous to human SLC33A1 (solute carrier family 33 member 1). [provided by Alliance of Genome Resources, Apr 2022]