Anti-TAT antibody produced in chicken is suitable for western blotting at a working dilution of 1:500 and for cell staining at a working dilution of 1:200.
Biochem/physiol Actions
TAT (Transactivating regulatory protein) is a trans-activator of human immunodeficiency virus-1 (HIV-1) gene expression and is important for virus replication. It binds to the bulge loop RNA element called TAR, but can also associate with cellular transcription factors. Cyclin T binds with TAT and thereby enhances the affinity of TAT-TAR RNA interaction. Protein arginine methyltransferase-6 (PRMT6) is responsible for methylation of TAT and negatively affects the association between TAT and cyclin T. TAT is involved in the activation of nuclear factor κB (NFκB), a master regulator of pro-inflammatory genes. TAT binds with α5β1 and αvβ3 integrins, and causes vascular cell migration and invasion. At the neural plasma membrane, TAT induces formation of a complex involving the low-density lipoprotein receptor-related protein (LRP), postsynaptic density protein-95 (PSD-95), N-methyl-d-aspartic acid (NMDA) receptors and neuronal nitric oxide synthase (nNOS). This complex is responsible for apoptosis in neurons and astrocytes, causing neurologic dysfunction in AIDS patients.
Physical form
Solution in phosphate buffered saline containing 0.02% sodium azide.
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The Tat protein of HIV-1 trans-activates transcription in vitro in a cell-free extract of HeLa nuclei. Quantitative analysis of the efficiency of elongation revealed that a majority of the elongation complexes generated by the HIV-1 promoter were not highly processive
Nuclear factor (NF)-κB is a master regulator of pro-inflammatory genes and is upregulated in human immunodeficiency virus 1 (HIV-1) infection. Mechanisms underlying the NF-κB deregulation by HIV-1 are relevant for immune dysfunction in AIDS. We report that in single round
Proceedings of the National Academy of Sciences of the United States of America, 104(9), 3438-3443 (2007-03-16)
HIV infection of the central nervous system can result in neurologic dysfunction with devastating consequences in AIDS patients. NeuroAIDS is characterized by neuronal injury and loss, yet there is no evidence that HIV can infect neurons. Here we show that
The Tat protein of human immunodeficiency virus type-1 (HIV-1) has been shown to be released during acute infection of T cells by HIV-1 and to promote angiogenesis and Kaposi's sarcoma (KS) development in infected individuals. In this study, we investigated
Journal of virology, 81(8), 4226-4234 (2007-02-03)
Arginine methylation has been shown to regulate signal transduction, protein subcellular localization, gene transcription, and protein-protein interactions that ultimately alter gene expression. Although the role of cellular protein arginine methyltransferases (PRMT) in viral gene expression is largely unknown, we recently
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