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The Biology of CRISPR-Cas: Backward and Forward

Tipo de material: TextoTextoSeries ; Cell, 172(6), p.1239-1259, 2018Trabajos contenidos:
  • Hille, F
  • Richter, H
  • Wong, S.P
  • Bratovic, M
  • Ressel, S
  • Charpentier, E
Tema(s): Recursos en línea: Resumen: In bacteria and archaea, clustered regularly interspaced short palindromic repeats (CRISPR)and CRISPR-associated (Cas)proteins constitute an adaptive immune system against phages and other foreign genetic elements. Here, we review the biology of the diverse CRISPR-Cas systems and the major progress achieved in recent years in understanding the underlying mechanisms of the three stages of CRISPR-Cas immunity: adaptation, crRNA biogenesis, and interference. The ecology and regulation of CRISPR-Cas in the context of phage infection, the roles of these systems beyond immunity, and the open questions that propel the field forward are also discussed. CRISPR-Cas systems provide bacteria and archaea with diverse mechanisms of adaptive immunity, illuminating the evolutionary pressures imposed by selfish genetic elements.
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In bacteria and archaea, clustered regularly interspaced short palindromic repeats (CRISPR)and CRISPR-associated (Cas)proteins constitute an adaptive immune system against phages and other foreign genetic elements. Here, we review the biology of the diverse CRISPR-Cas systems and the major progress achieved in recent years in understanding the underlying mechanisms of the three stages of CRISPR-Cas immunity: adaptation, crRNA biogenesis, and interference. The ecology and regulation of CRISPR-Cas in the context of phage infection, the roles of these systems beyond immunity, and the open questions that propel the field forward are also discussed. CRISPR-Cas systems provide bacteria and archaea with diverse mechanisms of adaptive immunity, illuminating the evolutionary pressures imposed by selfish genetic elements.

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