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Aminoacylation of TRNA: Aminoacylation

Aminoacylation

  • In an ATP-dependent process, aminoacyl-tRNA synthetases catalyses the aminoacylation of tRNA.
  • The carboxyl group of the amino acid is activated by the energy of ATP hydrolysis and forms an ester with one of the cis-diols of the terminal A76 ribose in tRNA.
  • The triplet anti-codon on the anti-codon end of the produced aa-tRNA is physically connected to the amino-acyl group on the 3′ end of the tRNA, which acts as the genetic code.
  • In th…

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Fidelity of Replication: Base Substitution Fidelity

Introduction

  • The integrity of the genome is largely determined by DNA replication fidelity, which is also crucial to the evolution of species and the genesis of human disorders.
  • Replication fidelity may be influenced by a variety of elements and processes.
  • The substantially higher level of fidelity that was really attained is largely due to DNA polymerase՚s actions.
  • DNA polymerase works by assisting with base selection for insertion into newly synthesized DNA, which raises re…

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