Enables 1-phosphatidylinositol 4-kinase activity. Involved in phosphatidylinositol phosphate biosynthetic process. Predicted to be located in Golgi-associated vesicle membrane. Predicted to be active in cytoplasm and plasma membrane. Is expressed in several structures, including alimentary system; genitourinary system; nervous system; respiratory system; and sensory organ. Orthologous to human PI4KA (phosphatidylinositol 4-kinase alpha). [provided by Alliance of Genome Resources, Apr 2022]