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JTB, also known as Protein JTB, has a 146 amino acid long isoform that is 16 kDa and a short 117 amino acid that is 13 kDa; needed for normal cytokinesis during mitosis, participates in the regulation of cell proliferation, may be a component of the chromosomal passenger complex (CPC), a complex that acts as a key regulator of mitosis. The CPC complex has essential functions at the centromere in ensuring correct chromosome alignment and segregation and is required for chromatin-induced microtubule stabilization and spindle assembly, fosters AURKB activity, its overexpression induces swelling of mitochondria and reduces mitochondrial membrane potential. Disease research is currently being studied with relation to JTB and lymph node tuberculosis, tuberculous meningitis, abdominal tuberculosis, prostatitis, hepatocellular carcinoma, carcinoma, and adenoid cystic carcinoma. The protein has been shown to interact with AURKA, AURKB, BIRC5, INCENP, and LIG3 proteins in apoptotic process, regulation of cell proliferation, cell cycle cytokinesis, mitosis, and cell cycle pathways.
