No problem not being nice to Dickson in this episode, because he’s absent for a discussion of a new giant virus that replicates in the cytoplasm yet transiently accesses the nucleus to bootstrap infection. You can find TWiV #440 at microbe.tv/twiv, or listen below. Click arrow to play Download TWiV 440 (72 MB .mp3, 119 min) Subscribe …
Among the multitudes of eukaryotic viruses with DNA genomes, some replicate in the cell nucleus, while others avoid the nuclear bureaucracy and remain in the cytoplasm. But biology is not always so rigid: a new giant virus has been found that replicates in the cytoplasm, where it seems to recruit components of the nuclear transcription machinery …
On episode #293 of the science show This Week in Virology, Vincent visits Melbourne, Australia and speaks with Melissa, Alex, Gilda, and Paul about their work on HIV infection of the central nervous system, West Nile virus, microbicides for HIV, and the Koala retrovirus. You can find TWiV #293 at www.microbe.tv/twiv.
On episode #279 of the science show This Week in Virology, Vincent, Alan, and Kathy reveal how a retrovirus in the human genome keeps embryonic stem cells in a pluripotent state, from where they can differentiate into all cells of the body. You can find TWiV #279 at www.microbe.tv/twiv.
About eight percent of human DNA is viral – remnants of ancestral infections with retroviruses. These endogenous retroviral sequences do not produce infectious viruses, and most are considered to be junk DNA. But some of them provide important functions. The protein called syncytin, which is essential for formation of the placenta, originally came to the …
En esta clase revisaremos como se sintetizan los pre-RNA mensajeros a partir de sus templados de DNA, y como los pre-mRNA se convierten a mRNAs maduros mediante splicing, poliadenilación, y su exportación del núcleo al citoplasma celular.
