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Full-Text Articles in Molecular Biology
Interactions Of The Cellular Sumoylation System With Influenza A Virus And Its Non-Structural Protein Ns1a (Ns1a), Sangita Pal
Interactions Of The Cellular Sumoylation System With Influenza A Virus And Its Non-Structural Protein Ns1a (Ns1a), Sangita Pal
Open Access Theses & Dissertations
The most important current anti-influenza weapons, vaccination and antiviral drugs, can be rapidly rendered fully ineffective thanks to the virus's high mutational rate, which produces viruses exhibiting new antigenic properties and structural proteins insensitive to the drug's mechanism of action. One attractive alternative is to develop drugs that modulate the activity of cellular systems either required for viral growth or able to neutralize viral growth. Here we demonstrate that the cellular SUMOylation system, a post-translational modification involving the conjugation of the Small Ubiquitin-like MOdifier (SUMO) to specific protein targets using a Ubiquitin-like enzymatic cascade, interacts closely with influenza virus during …
The Role Of Sumoylation Of Ledgf/P75 In Hiv-1 Infection, Murilo Tadeu Domingues Bueno
The Role Of Sumoylation Of Ledgf/P75 In Hiv-1 Infection, Murilo Tadeu Domingues Bueno
Open Access Theses & Dissertations
The lens epithelium-derived growth factor (LEDGF) proteins p75 and p52 are transcriptional co-activators that protect cells from stresses through modulation of stress and heat shock-related genes. Besides regulating such genes, LEDGF/p75 is also important in the process of HOX gene expression and leukemia transformation driven by the MLL histone methyl transferase complex. By exploiting a similar mechanism of interaction between LEDGF/p75 and MLL, the HIV-1 viral protein Integrase (IN) associates with LEDGF/p75 in order to execute efficient viral DNA integration. This present work has identified that LEDGF proteins are posttranslationally modified by SUMO-1 and -3. SUMOylation was found to target …