Nucleologenesis
Mostrando 1-3 de 3 artigos, teses e dissertações.
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1. Nucleolar activity during spermatogenesis of the cattle (Bos indicus) / Atividade nucleolar durante a espermatogenese de bovinos (Bos indicus)
A espermatogenese é um processo muito importante para a predição de fertilidade na pecuária moderna. Muitos aspectos desse processo tem sido estudados, inclusive as várias estruturas celulares, como o nucléolo. Sabe-se que, durante a divisão celular, o nucléolo se desorganiza, reorganizando-se apenas no final da telófase. O presente estudo teve como
Publicado em: 2007
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2. Initiation of Nucleolar Assembly Is Independent of RNA Polymerase I Transcription
This report examines the distribution of an RNA polymerase I transcription factor (upstream binding factor; UBF), pre-rRNA processing factors (nucleolin and fibrillarin), and pre-rRNAs throughout mitosis and postmitotic nucleologenesis in HeLa cells. The results demonstrate that nucleolin, fibrillarin, and pre-rRNAs synthesized at G2/M phase of the prev
The American Society for Cell Biology.
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3. Nucleologenesis: U3 snRNA-containing prenucleolar bodies move to sites of active pre-rRNA transcription after mitosis.
We have investigated the distribution of U3 snRNA and rRNA in HeLa cells and normal rat kidney cells during interphase and mitosis. U3 snRNA, known to be involved in pre-rRNA processing, was detected in nucleoli and coiled bodies during interphase, whereas rRNA was distributed in the nucleoli and throughout the cytoplasm. By comparison, ribosomal protein S6