Predicted to enable syntaxin binding activity. Predicted to be involved in several processes, including Golgi organization; Golgi vesicle transport; and intracellular protein transport. Predicted to be located in synaptic vesicle. Predicted to be active in several cellular components, including COPII-coated ER to Golgi transport vesicle; Golgi apparatus; and endoplasmic reticulum-Golgi intermediate compartment. Orthologous to human TMED9 (transmembrane p24 trafficking protein 9). [provided by Alliance of Genome Resources, Apr 2022]