Enables mRNA binding activity and pyruvate kinase activity. Involved in positive regulation of cytoplasmic translation. Acts upstream of or within glycolytic process. Located in cilium; photoreceptor inner segment; and rough endoplasmic reticulum. Is expressed in several structures, including alimentary system; genitourinary system; nervous system; respiratory system; and sensory organ. Orthologous to human PKM (pyruvate kinase M1/2). [provided by Alliance of Genome Resources, Apr 2022]