?
Deltaretrovirus Tax protein This family consists of Rex/Tax proteins from human and simian T-cell leukaemia viruses. The exact function of these proteins is unknown. Tax is the viral transactivator; is it a nuclear phosphoprotein that interacts with CREB, coactivator CBP/p300 and PCAF to form a multiprotein complex, which activates viral LTR and stimulates virus expression. Tax is also involved in deregulated expression of numerous cellular genes leading to T-cell leukaemia. Rex is a nucleolar post transcriptional regulator that facilitates export to the cytoplasm of viral RNA not or incompletely spliced [personal communication, Dr. S Nicot]. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",