Abstract: The present invention provides nucleic acid molecules that encode histone deacetylase, as well as recombinant vectors and host cells that include the subject nucleic acid molecules. Also provided are histone deacetylase polypeptide compositions. The histone deacteylase nucleic acid molecules are useful in a variety of diagnostic and therapeutic applications, which are also provided.

Abstract: The present invention relates to screening methods that make use of a histone deacetylase interacting with a myosin phosphatase for the identification of novel therapeutics useful for inhibiting or inducing apoptosis and for the treatment of pathological conditions, such as smooth muscle cell disorder, cardiac hypertrophy or asthma. Also disclosed are methods for inhibiting or inducing apoptosis and for treatment of a pathological condition by administering to a mammal a therapeutically effective amount of a compound that inhibits or increases the dephosphorylation of a histone deacetylase by a myosin phosphatase or inhibits or increases the binding of a histone deacetylase to a myosin phosphatase.

Abstract: The present invention provides methods for identifying agents that modulate a level or an activity of a mitochondrial NAD-dependent deacetylase polypeptide, as well as agents identified by the methods. The invention further provides methods of modulating mitochondrial NAD-dependent deacetylase activity in a cell. The invention further provides methods of modulating mitochondrial function by modulating the activity of mitochondrial NAD-dependent deacetylase.

Abstract: The present invention provides isolated cells that comprise, integrated into the genome of the cell, a transcription-competent immunodeficiency virus or a transcription-competent immunodeficiency virus-based retroviral vector. Under basal in vitro culture conditions, the immunodeficiency virus is latent, and the expression of the latent immunodeficiency virus can be reactivated. The invention farther provides methods of making a subject cell. The invention further provides screening methods for identifying agents that activate a latent immunodeficiency virus; and screening method for identifying agents that block reactivation of latent immunodeficiency virus expression in response to T cell activation signals. The invention further provides agents identified in the subject screening assays. The invention further provides methods of treating an immunodeficiency virus infection.

Abstract: The present invention provides isolated cells that comprise, integrated into the genome of the cell, a transcription-competent immunodeficiency virus or a transcription-competent immunodeficiency virus-based retroviral vector. Under basal in vitro culture conditions, the immunodeficiency virus is latent, and the expression of the latent immunodeficiency virus can be reactivated. The invention further provides methods of making a subject cell. The invention further provides screening methods for identifying agents that activate a latent immunodeficiency virus; and screening method for identifying agents that block reactivation of latent immunodeficiency virus expression in response to T cell activation signals. The invention further provides agents identified in the subject screening assays. The invention further provides methods of treating an immunodeficiency virus infection.

Abstract: The present invention provides methods of detecting cells showing smooth muscle differentiation. The present invention further provides methods of detecting tumor cells. The present invention further provides compositions and methods for treating smooth muscle cell disorders.

Abstract: The present invention provides treatment methods involving modulating a sirtuin activity and/or a sirtuin mRNA and/or a sirtuin polypeptide level. In some embodiments, the present invention provides treatment methods involving modulating SIRT1 activity and/or SIRT mRNA and/or polypeptide level. The present invention provides methods of inhibiting SIRT1 Tat deacetylase activity. Methods of inhibiting SIRT1 Tat deacetylase activity are useful for treating immunodeficiency virus infections, particularly human immunodeficiency virus (HIV) infection. Thus, the present invention provides methods of treating an immunodeficiency virus infection, generally involving inhibiting SIRT1 Tat deacetylase activity. The present invention further provides methods of identifying agents that modulate sirtuin activity (e.g., SIRT1 activity), particularly ability of sirtuins to interact with (e.g., bind and/or deacetylate) a substrate, e.g., a viral substrate such as a Tat polypeptide.

Abstract: The present invention provides compositions, including immunogenic compositions, comprising acetylated Tat protein of an immunodeficiency virus. The present invention further provides antibodies that specifically bind an acetylated Tat polypeptide. The present invention further provides methods of inducing an immune response to an immunodeficiency virus Tat protein in an individual. The present invention further provides methods of inhibiting transcriptional activation of an immunodeficiency virus in a cell of an individual.

Abstract: The present invention provides the structural determination of a bromodomain determined by NMR spectroscopy. The present invention also provides binding partners for the bromodomain. The present invention further provides the structural determination of the Tat-P/CAF binding complex determined by NMR spectroscopy. In addition, the present invention provides methodology for related drug discovery using high throughput drug screening or structure based rational drug design using the three-dimensional data.

Abstract: The present invention provides the structural determination of a bromodomain determined by NMR spectroscopy. The present invention also provides binding partners for the bromodomain. The present invention further provides the structural determination of the Tat-P/CAF binding complex determined by NMR spectroscopy. In addition, the present invention provides methodology for related drug discovery using high throughput drug screening or structure based rational drug design using the three-dimensional data.

Abstract: The present invention provides isolated cells that comprise, integrated into the genome of the cell, a transcription-competent immunodeficiency virus or a transcription-competent immunodeficiency virus-based retroviral vector. Under basal in vitro culture conditions, the immunodeficiency virus is latent, and the expression of the latent immunodeficiency virus can be reactivated. The invention further provides methods of making a subject cell. The invention further provides screening methods for identifying agents that activate a latent immunodeficiency virus; and screening method for identifying agents that block reactivation of latent immunodeficiency virus expression in response to T cell activation signals. The invention further provides agents identified in the subject screening assays. The invention further provides methods of treating an immunodeficiency virus infection.

Abstract: The present invention provides nucleic acid molecules that encode histone deacetylase, as well as recombinant vectors and host cells that include the subject nucleic acid molecules. Also provided are histone deacetylase polypeptide compositions. The histone deacteylase nucleic acid molecules are useful in a variety of diagnostic and therapeutic applications, which are also provided.