VP24: Difference between revisions
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'''Ebola''' | '''Ebola''' | ||
In a normal immune response interferons (IFN) are produced to alert surrounding cells to the presence of a pathogen, which activates STAT1 by phosphorylation(2). STAT1 is a transcription factor that increases production of immune fighting genes in cells, STAT1 is brought to the nucleus by karyopherin α proteins(2). Ebola protein VP24 <scene name='60/602719/Vp24_bound_to_karyopherin_a5/1'>binds to karyopherin</scene> α1, α5, and α6, | In a normal immune response interferons (IFN) are produced to alert surrounding cells to the presence of a pathogen, which activates STAT1 by phosphorylation(2). STAT1 is a transcription factor that increases production of immune fighting genes in cells, STAT1 is brought to the nucleus by karyopherin α proteins(2). Ebola protein VP24 <scene name='60/602719/Vp24_bound_to_karyopherin_a5/1'>binds to karyopherin</scene> α1, α5, and α6, which normally bring the P-STAT1 to the nucleus(3). With the karyopherin proteins bound, P-STAT1 does not make it to the nucleus which greatly weakens the immune response in cells (3). | ||
'''Marburg''' | '''Marburg''' | ||
Keap1 is a protein that degrades the transcription factor Nrf2(4). VP24 in the Marburg virus targets and binds the Keap1 protein, and as a result leaves Nrf2 unaltered(4). High levels of Nrf2 triggers antioxidant response elements(ARE)(4). This causes cells to become defensive, which protects the Marburg virus inside the cell(4). | Keap1 is a protein that degrades the transcription factor Nrf2(4). VP24 in the Marburg virus targets and binds the Keap1 protein, and as a result leaves Nrf2 unaltered(4). High levels of Nrf2 triggers antioxidant response elements(ARE)(4). This causes cells to become defensive, which protects the Marburg virus inside the cell(4). | ||