Análisis filogenético de la Rpa14 y Rpa43 de la ARN polimerasa I
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2023-06-03
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Jaén: Universidad de Jaén
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[ES] La ARN polimerasa I es de vital importancia para sintetizar ARNr, uno de los componentes
de los ribosomas. Se conforma por 14 subunidades en levaduras, pero 13 en la proteína
humana, ya que, no presenta homólogo de la subunidad Rpa14. Esta Rpa14 se encuentra
conformando el tallo de la polimerasa junto a la Rpa43. La Rpa14 dejo de ser una
subunidad propia en algún punto de la evolución. Debido a la cercanía de la Rpa43, esta
debería de reflejar los cambios que sufra la Rpa14, por ello, vamos a estudiar la secuencia
de aminoácidos mediante la búsqueda de secuencias homólogas y el alineamiento de la
Rpa14 y Rpa43 en diferentes especies a lo largo de la evolución. Con esto
determinaremos el punto en el que la Rpa14 está ausente y los cambios que sufre durante
su evolución. Este estudio refleja que no existe coevolución entra la Rpa14 y Rpa43.
[EN] RNA polymerase I is of vital importance for synthesizing rRNA, one of the components of ribosomes. It is made up of 14 subunits in yeast, but 13 in the human protein, since it does not present a homologue of the Rpa14 subunit. This Rpa14 is found forming the stem of the polymerase next to Rpa43. Rpa14 ceased to be its own subunit at some point in evolution. Due to the proximity of Rpa43, this should reflect the changes that Rpa14 undergoes, therefore, we are going to study the amino acid sequence by searching for homologous sequences and aligning Rpa14 and Rpa43 in different species throughout the evolution. With this we will determine the point at which Rpa14 is absent and the changes it undergoes during its evolution. This study shows that there is no coevolution between Rpa14 and Rpa43.
[EN] RNA polymerase I is of vital importance for synthesizing rRNA, one of the components of ribosomes. It is made up of 14 subunits in yeast, but 13 in the human protein, since it does not present a homologue of the Rpa14 subunit. This Rpa14 is found forming the stem of the polymerase next to Rpa43. Rpa14 ceased to be its own subunit at some point in evolution. Due to the proximity of Rpa43, this should reflect the changes that Rpa14 undergoes, therefore, we are going to study the amino acid sequence by searching for homologous sequences and aligning Rpa14 and Rpa43 in different species throughout the evolution. With this we will determine the point at which Rpa14 is absent and the changes it undergoes during its evolution. This study shows that there is no coevolution between Rpa14 and Rpa43.
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Genética