Enables enzyme inhibitor activity. Acts upstream of or within several processes, including negative regulation of transcription by RNA polymerase II; platelet-derived growth factor receptor signaling pathway; and protein import into nucleus. Located in cytoplasm. Is expressed in several structures, including alimentary system; brain; genitourinary system; integumental system; and sensory organ. Used to study Reye syndrome and hepatocellular carcinoma. Orthologous to human TXNIP (thioredoxin interacting protein). [provided by Alliance of Genome Resources, Apr 2022]