Arginyl-tRNA protein transferase

FIGURE 12.24 Degradation of proteins with acidic N-termini. Proteins with acidic N-termini show a tRNA requirement for degradation. Arginyl-tRNA protein transferase catalyzes the transfer of Arg to the free a-NHj of proteins with Asp or Glu N-terminal residues. Arg-tRNA protein transferase serves as part of the protein degradation recognition system. 

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