Immunogen Sequence: GI # 9629358, sequence 1-86

Recombinant tat (human immunodeficiency virus 1)

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.

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.

Solution in phosphate buffered saline containing 0.02% sodium azide.

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