alexa Tits and bits of HIV Tat protein.
Immunology

Immunology

HIV: Current Research

Author(s): Johri MK, Mishra R, Chhatbar C, Unni SK, Singh SK, Johri MK, Mishra R, Chhatbar C, Unni SK, Singh SK

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Abstract INTRODUCTION: HIV-Tat protein displays an array of functions that are essential for HIV replication. The structural flexibility of Tat protein has been regarded as one of the unique features responsible for sustaining diverse functions, from facilitated membrane-crossing ability to strong affinity for RNA binding. AREAS COVERED: RNA binding ability and presence of multiple interacting domains in the same protein are very important properties of HIV-Tat protein. Tat protein has shown great ability to influence cellular and viral gene expression. We discuss the functions of HIV Tat protein, describing its structural significance, secretion and uptake of HIV Tat protein by immune cells, post-translational modifications and role of HIV Tat protein in HIV pathogenesis. EXPERT OPINION: Perturbation in expression of many cytokines and chemokines by HIV-Tat protein exhibits downstream immune suppressive function as well as activation of several apoptotic genes. This explains the massive death of immune cells due to bystander effect of HIV Tat protein among HIV-infected patients. This article was published in Expert Opin Biol Ther and referenced in HIV: Current Research

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