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Ribosome

Ribonucleoprotein complex that reads messenger RNA and synthesizes proteins.

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Ribosome

Ribonucleoprotein complex that reads messenger RNA and synthesizes proteins.

It is a ribonucleoprotein complex made of ribosomal RNA and proteins, organized into two subunits (30S and 50S in bacteria, which assemble into a 70S ribosome), that catalyzes protein synthesis by reading messenger RNA.

It is the universal translation machinery across all domains of life and the site where the genetic code is converted into an amino acid sequence; its correct assembly is essential for cell viability.

The video describes it as the workshop or machinery that synthesizes proteins, and explains that Escherichia coli never stops making ribosomes because without ribosomes there is no translation. It also details how its small subunit first binds the messenger RNA and the large subunit then completes the 70S ribosome to begin reading the codons.

Relations

Sources · original ES transcript

  • The Rule Behind All Life | The Central Dogma4:18
    Pues los ribosomas. Los ribosomas, que son los talleres o la maquinaria para que se sinteticen las proteínas, y estas están involucradas en las funciones metabólicas que lleva a cabo la célula, que son diversas.
  • The Rule Behind All Life | The Central Dogma12:51
    Escherichia coli nunca deja de fabricar ribosomas, no importa si hay glucosa, lactosa, frío o calor. El gen del ARN ribosomal 16S está siempre encendido. Porque sin ribosomas no hay traducción, y sin traducción no hay proteínas.
  • The Rule Behind All Life | The Central Dogma15:34
    Una vez que este RNA de transferencia está colocado y todo está muy bien alineado, la subunidad grande del ribosoma, la 50S, se une para formar el ribosoma completo 70S.
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