Anti-Signal transducer and activator of transcription 1 antibodies are directed against the protein encoded by the gene STAT1 in humans. The gene may also be known as CANDF7, IMD31A, IMD31B, IMD31C, and signal transducer and activator of transcription 1-alpha/beta. Structurally, the protein is reported to be 87.3 kilodaltons in mass. Based on gene name, canine, porcine, monkey, mouse and rat orthologs may also be found. Anti-Signal transducer and activator of transcription 1 antibodies are directed against the protein encoded by the gene STAT1 in humans. The gene may also be known as CANDF7, IMD31A, IMD31B, IMD31C, and signal transducer and activator of transcription 1-alpha/beta. Structurally, the protein is reported to be 87.3 kilodaltons in mass. Based on gene name, canine, porcine, monkey, mouse and rat orthologs may also be found.